{"id":2213,"date":"2026-06-03T13:43:43","date_gmt":"2026-06-03T05:43:43","guid":{"rendered":"https:\/\/jeez-semicon.com\/?p=2213"},"modified":"2026-06-03T13:43:43","modified_gmt":"2026-06-03T05:43:43","slug":"cmp-slurry-composition-explained-2","status":"publish","type":"post","link":"https:\/\/jeez-semicon.com\/de\/blog\/cmp-slurry-composition-explained-2\/","title":{"rendered":"CMP-Slurry-Zusammensetzung erkl\u00e4rt"},"content":{"rendered":"<!-- ===== JEEZ \u00b7 CMP Slurry Composition Explained \u2014 paste into Gutenberg \"Custom HTML\" block ===== -->\n\n<style>\n@import url('https:\/\/fonts.googleapis.com\/css2?family=Sora:wght@500;600;700;800&family=IBM+Plex+Sans:ital,wght@0,400;0,500;0,600;1,400&family=IBM+Plex+Mono:wght@500;600&display=swap');\n.jz-a2-wrap{\n  --ink:#0a1f33; --navy:#0d2a44; --navy2:#123a5c;\n  --acc:#15a9cc; --accd:#0f8aa8; --accl:#e6f6fa;\n  --text:#1c2b3a; --muted:#5a6b7b; --line:#e1e8ef; --bg:#f6f9fb; --card:#fff;\n  --r:16px; --sh:0 12px 40px 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60%,#123a5c);}\n.jz-a2-wrap .ps-cta:before{content:\"\";position:absolute;inset:0;opacity:.4;background-image:linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);background-size:36px 100%;}\n.jz-a2-wrap .ps-cta>*{position:relative;z-index:1;}\n.jz-a2-wrap .ps-cta h2{font-family:'Sora',sans-serif;font-weight:800;font-size:clamp(21px,2.9vw,28px);color:#fff;margin:0 0 10px;letter-spacing:-.01em;border:none;padding:0;}\n.jz-a2-wrap .ps-cta p{color:#cfe2ec;max-width:62ch;margin-bottom:22px;}\n.jz-a2-wrap .ps-btn{display:inline-flex;align-items:center;gap:10px;background:var(--acc);color:#04222e;font-family:'Sora',sans-serif;font-weight:700;font-size:16px;padding:14px 28px;border-radius:50px;border:none;transition:.2s;box-shadow:0 8px 24px color-mix(in srgb,var(--acc) 45%, transparent);}\n.jz-a2-wrap .ps-btn:hover{filter:brightness(1.1);color:#04222e;transform:translateY(-2px);border:none;}\n.jz-a2-wrap .ps-btn span{font-family:'IBM Plex Mono',monospace;}\n.jz-a2-wrap .ps-signoff{font-size:14px;color:var(--muted);border-top:1px solid var(--line);padding-top:20px;margin-top:38px;font-style:italic;}\n@media(max-width:760px){\n  .jz-a2-wrap{font-size:16px;}\n  .jz-a2-wrap .ps-hero{padding:40px 24px 36px;}\n  .jz-a2-wrap .ps-toc{padding:22px 20px;}\n  .jz-a2-wrap .ps-toc ol{grid-template-columns:1fr;gap:0;}\n  .jz-a2-wrap .ps-cards{grid-template-columns:1fr;}\n  .jz-a2-wrap .ps-cta{padding:34px 24px;}\n}\n<\/style>\n\n<div class=\"jz-a2-wrap\">\n  <header class=\"ps-hero\">\n    <div class=\"ps-eyebrow\">JEEZ \u00b7 Fundamentals<\/div>\n    <p class=\"ps-lead\">A finished CMP slurry looks like a simple milky liquid, but it is a tightly controlled multi-component system. This guide explains what CMP slurry is made of, what each ingredient does to removal rate, selectivity and defectivity, and how the pieces interact.<\/p>\n    <div class=\"ps-meta\"><span>By <b>JEEZ \u2014 Jizhi Electronic Technology Co., Ltd.<\/b><\/span><span>Updated <b>June 2026<\/b><\/span><\/div>\n  <\/header>\n\n  <nav class=\"ps-toc\" aria-label=\"Table of contents\">\n    <h2>Inhalts\u00fcbersicht<\/h2>\n    <ol><li><a href=\"#jz-a2-overview\">The Building Blocks at a Glance<\/a><\/li><li><a href=\"#jz-a2-abrasive\">Abrasive Partikel<\/a><\/li><li><a href=\"#jz-a2-solids\">Solids Loading and Particle Size<\/a><\/li><li><a href=\"#jz-a2-chem\">The Chemical System<\/a><\/li><li><a href=\"#jz-a2-ph\">pH, Surface Charge and Zeta Potential<\/a><\/li><li><a href=\"#jz-a2-water\">Ultrapure Water and Purity<\/a><\/li><li><a href=\"#jz-a2-interplay\">Why You Cannot Tune One Ingredient Alone<\/a><\/li><\/ol>\n  <\/nav>\n\n  <section class=\"ps-sec\" id=\"jz-a2-overview\"><h2>The Building Blocks at a Glance<\/h2><p>Every CMP slurry is engineered around a single idea: make the chemistry and the abrasive work together to remove a softened surface layer cleanly. Each ingredient exists to push one of the three performance levers \u2014 rate, selectivity or defectivity \u2014 without disturbing the others. If you are new to the process, our guide on <a href=\"https:\/\/jeez-semicon.com\/de\/blog\/How-CMP-Slurry-Works\/\" target=\"_blank\" rel=\"noopener\">how CMP slurry works<\/a> provides the context; the broader landscape is in the <a href=\"https:\/\/jeez-semicon.com\/de\/blog\/What-Is-Polishing-Slurry\/\" target=\"_blank\" rel=\"noopener\">polishing slurry pillar guide<\/a>.<\/p><p>By volume a slurry is mostly water, but its behaviour is dictated by the few percent of solids and the fraction of a percent of carefully chosen additives. Tiny changes in those minor components can swing removal rate by tens of percent or turn a low-defect slurry into a scratching one \u2014 which is why composition is controlled so tightly.<\/p><\/section><section class=\"ps-sec\" id=\"jz-a2-abrasive\"><h2>Abrasive Partikel<\/h2><p>The abrasive is the mechanical workhorse \u2014 typically colloidal or fumed silica, cerium oxide, alumina or, for the hardest substrates, diamond. Three properties dominate: <b>mean particle size<\/b>, <b>size distribution<\/b> (especially the large-particle tail that causes scratches) and <b>purity<\/b>. Higher solids loading generally raises removal rate but increases defect risk, so formulators optimise rather than maximise.<\/p><p>Particle morphology matters too. Colloidal silica is grown as discrete spherical particles and tends to give the lowest defectivity; fumed silica is built from fused aggregates that can be more aggressive but harder to keep stable. The trade-offs between abrasive families are compared in <a href=\"https:\/\/jeez-semicon.com\/de\/blog\/Silica-vs-Ceria-vs-Alumina-vs-Diamond-Slurry\/\" target=\"_blank\" rel=\"noopener\">silica vs ceria vs alumina vs diamond slurry<\/a>.<\/p><\/section><section class=\"ps-sec\" id=\"jz-a2-solids\"><h2>Solids Loading and Particle Size<\/h2><p>Two of the most powerful formulation knobs are how much abrasive is in the slurry (solids loading or weight percent) and how big the particles are. Up to a point, raising solids loading increases the number of active contact points and lifts removal rate; beyond that point the rate saturates while defect risk keeps climbing. Mean particle size shifts the balance between aggressive removal and fine finishing.<\/p><div class=\"ps-tablewrap\"><table class=\"ps-table\"><thead><tr><th>Lever<\/th><th>Increase it and\u2026<\/th><th>Risk<\/th><\/tr><\/thead><tbody><tr><td><b>Solids loading<\/b><\/td><td>Removal rate rises, then saturates<\/td><td>More defects, higher cost, lower stability<\/td><\/tr><tr><td><b>Mean particle size<\/b><\/td><td>More aggressive removal<\/td><td>Higher roughness and scratch risk<\/td><\/tr><tr><td><b>Large-particle tail<\/b><\/td><td>(never desirable)<\/td><td>Direct cause of scratches<\/td><\/tr><\/tbody><\/table><\/div><\/section><section class=\"ps-sec\" id=\"jz-a2-chem\"><h2>The Chemical System<\/h2><p>The chemistry is what separates CMP from simple grinding. The main classes are:<\/p><ul class=\"ps-list\"><li><b>Oxidisers<\/b> \u2014 such as hydrogen peroxide, used in metal CMP to convert the metal surface into a softer oxide. Oxidiser type and concentration are primary removal-rate knobs.<\/li><li><b>Complexing \/ chelating agents<\/b> \u2014 bind dissolved metal ions and set the balance between static chemical etch and mechanical removal, which governs dishing and corrosion.<\/li><li><b>Corrosion inhibitors<\/b> \u2014 form a protective film over recessed metal, critical for copper interconnect integrity.<\/li><li><b>Dispersants and surfactants<\/b> \u2014 keep abrasive particles separated, wet the surface and help carry away debris.<\/li><li><b>pH adjusters and buffers<\/b> \u2014 hold the slurry in its designed window, because surface charge, particle stability and reaction rates are all pH-dependent.<\/li><li><b>Biocides and stabilisers<\/b> \u2014 protect shelf life against microbial growth and chemical drift.<\/li><\/ul><p>Each additive is present at a level chosen to do its job without provoking side effects. An inhibitor that is too strong starves removal; too weak and recessed metal corrodes. This narrow-window behaviour is typical of nearly every component.<\/p><\/section><section class=\"ps-sec\" id=\"jz-a2-ph\"><h2>pH, Surface Charge and Zeta Potential<\/h2><p>pH is arguably the master variable of a slurry. It controls reaction rates, the solubility of reaction products, and \u2014 critically \u2014 the electrical charge on the abrasive particles. That charge, characterised by the <b>zeta potential<\/b>, is what keeps particles repelling one another and staying dispersed. Near the particle&#8217;s isoelectric point the charge collapses, repulsion disappears and the slurry becomes prone to agglomeration, the failure mode detailed in <a href=\"https:\/\/jeez-semicon.com\/de\/blog\/CMP-Slurry-Stability-and-Particle-Agglomeration\/\" target=\"_blank\" rel=\"noopener\">slurry stability and particle agglomeration<\/a>.<\/p><p>This is why a slurry is formulated to operate at a pH comfortably away from its isoelectric point, and why even small pH excursions during handling or dilution can have outsized effects on both performance and stability.<\/p><\/section><section class=\"ps-sec\" id=\"jz-a2-water\"><h2>Ultrapure Water and Purity<\/h2><p>Water is the carrier and the largest component by volume. Because trace metal and ionic contamination translate directly into defects and device-reliability problems, CMP slurries are built on ultrapure water and high-purity raw materials. Metallic contamination is especially damaging in front-end steps, where mobile ions can degrade transistor performance. Purity is not a detail here \u2014 it is a first-order driver of yield.<\/p><\/section><section class=\"ps-sec\" id=\"jz-a2-interplay\"><h2>Why You Cannot Tune One Ingredient Alone<\/h2><p>The ingredients are coupled. Raising an oxidiser to boost rate can shift pH, change particle surface charge and accelerate static etch all at once. That coupling is the reason reformulating a slurry is never a one-variable exercise, and why consistent supplier-side process control is so important. It is also why point-of-use blending \u2014 mixing concentrate, oxidiser and water just before the tool \u2014 is common: it keeps reactive components apart until the last moment.<\/p><p>The composition you ultimately choose flows from <a href=\"https:\/\/jeez-semicon.com\/de\/blog\/How-to-Select-a-CMP-Slurry-by-Material-and-Process\/\" target=\"_blank\" rel=\"noopener\">how you select a slurry by material and process<\/a>.<\/p><div class=\"ps-callout\"><span class=\"tag\">Engineering insight<\/span><p>A robust slurry has a wide, forgiving process window: small drifts in temperature, dilution or pH should not push performance off target. That robustness is designed into the composition through buffering and balanced additives, not added later.<\/p><\/div><\/section>\n\n  <section class=\"ps-related\">\n    <h2>Continue Learning<\/h2>\n    <p class=\"sub\">Explore the rest of the JEEZ polishing slurry knowledge series.<\/p>\n    <div class=\"ps-cards\"><a class=\"ps-card pillar\" href=\"https:\/\/jeez-semicon.com\/de\/blog\/What-Is-Polishing-Slurry\/\" target=\"_blank\" rel=\"noopener\"><span class=\"k\">Start here \u00b7 Pillar guide<\/span><span class=\"t\">What Is Polishing Slurry? The Complete Guide<\/span><\/a><a class=\"ps-card\" href=\"https:\/\/jeez-semicon.com\/de\/blog\/How-CMP-Slurry-Works\/\" target=\"_blank\" rel=\"noopener\"><span class=\"k\">Related guide<\/span><span class=\"t\">How CMP Slurry Works<\/span><\/a><a class=\"ps-card\" href=\"https:\/\/jeez-semicon.com\/de\/blog\/Silica-vs-Ceria-vs-Alumina-vs-Diamond-Slurry\/\" target=\"_blank\" rel=\"noopener\"><span class=\"k\">Related guide<\/span><span class=\"t\">Silica vs Ceria vs Alumina vs Diamond Slurry<\/span><\/a><a class=\"ps-card\" href=\"https:\/\/jeez-semicon.com\/de\/blog\/How-to-Select-a-CMP-Slurry-by-Material-and-Process\/\" target=\"_blank\" rel=\"noopener\"><span class=\"k\">Related guide<\/span><span class=\"t\">How to Select a CMP Slurry by Material and Process<\/span><\/a><a class=\"ps-card\" href=\"https:\/\/jeez-semicon.com\/de\/blog\/CMP-Slurry-Stability-and-Particle-Agglomeration\/\" target=\"_blank\" rel=\"noopener\"><span class=\"k\">Related guide<\/span><span class=\"t\">CMP Slurry Stability and Particle Agglomeration<\/span><\/a><\/div>\n  <\/section>\n\n  <section class=\"ps-sec ps-faq\" id=\"jz-a2-faq\"><h2>H\u00e4ufig gestellte Fragen<\/h2><details open=\"\"><summary>Woraus besteht der CMP-Schlamm?<\/summary><div class=\"ans\">CMP slurry combines abrasive particles (silica, ceria, alumina or diamond), a chemical system of oxidisers, complexing agents, corrosion inhibitors, dispersants, surfactants and pH buffers, and a high-purity carrier fluid \u2014 usually ultrapure water. The exact recipe is tailored to the material being polished.<\/div><\/details><details><summary>What does the oxidiser do in a metal CMP slurry?<\/summary><div class=\"ans\">The oxidiser, often hydrogen peroxide, converts the metal surface into a thin, soft oxide layer that the abrasive can remove easily. Its type and concentration are among the most powerful tools for setting the metal removal rate.<\/div><\/details><details><summary>What is zeta potential and why does it matter?<\/summary><div class=\"ans\">Zeta potential is a measure of the electrical charge on the abrasive particles. A high magnitude means particles strongly repel one another and stay dispersed; near the isoelectric point the charge collapses and the slurry is prone to agglomeration. Slurries are formulated to operate at a pH that keeps zeta potential high.<\/div><\/details><details><summary>How does solids loading affect performance?<\/summary><div class=\"ans\">Raising solids loading increases the number of abrasive contact points and lifts removal rate up to a saturation point, beyond which rate plateaus while defectivity, cost and stability risk keep rising. Formulators choose a loading that meets the rate target with margin to spare.<\/div><\/details><details><summary>Why are corrosion inhibitors needed?<\/summary><div class=\"ans\">Corrosion inhibitors form a protective film on recessed metal features, preventing static chemical etch from attacking lines that are not in mechanical contact with the pad. This protects feature integrity, which is especially important for copper interconnects.<\/div><\/details><details><summary>Does water purity really matter that much?<\/summary><div class=\"ans\">Yes. Water is the largest component of the slurry by volume, and trace ionic or metallic contamination translates directly into surface defects and reliability risk. Ultrapure water and high-purity raw materials are essential to consistent yield, particularly in front-end steps.<\/div><\/details><\/section>\n\n  <section class=\"ps-cta\">\n    <h2>Talk to the JEEZ slurry engineering team<\/h2>\n    <p>From first slurry selection to defectivity optimisation and multi-source qualification, JEEZ \u2014 Jizhi Electronic Technology Co., Ltd. \u2014 helps you match the right polishing slurry to your material and process targets.<\/p>\n    <a class=\"ps-btn\" href=\"https:\/\/jeez-semicon.com\/de\/contact\/\" target=\"_blank\" rel=\"noopener\">Contact JEEZ <span>\u2192<\/span><\/a>\n  <\/section>\n\n  <p class=\"ps-signoff\">Part of the JEEZ Polishing Slurry knowledge series. Reviewed and updated June 2026 by Jizhi Electronic Technology Co., Ltd.<\/p>\n<\/div>\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\":\"https:\/\/schema.org\",\"@type\":\"Article\",\n  \"headline\":\"CMP Slurry Composition Explained\",\n  \"description\":\"A detailed breakdown of CMP slurry composition: abrasive particles, oxidisers, complexing agents, corrosion inhibitors, dispersants, surfactants, pH buffers, zeta potential, solids loading and ultrapure water.\",\n  \"author\":{\"@type\":\"Organization\",\"name\":\"JEEZ \\u2014 Jizhi Electronic Technology Co., Ltd.\",\"url\":\"https:\/\/jeez-semicon.com\/\"},\n  \"publisher\":{\"@type\":\"Organization\",\"name\":\"Jizhi Electronic Technology Co., Ltd.\",\"logo\":{\"@type\":\"ImageObject\",\"url\":\"https:\/\/jeez-semicon.com\/wp-content\/uploads\/jeez-logo.png\"}},\n  \"datePublished\":\"2026-06-01\",\"dateModified\":\"2026-06-01\",\n  \"mainEntityOfPage\":{\"@type\":\"WebPage\",\"@id\":\"https:\/\/jeez-semicon.com\/blog\/CMP-Slurry-Composition-Explained\"}\n}\n<\/script>\n<script type=\"application\/ld+json\">\n{\n  \"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n    {\"@type\":\"Question\",\"name\":\"What is CMP slurry made of?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"CMP slurry combines abrasive particles (silica, ceria, alumina or diamond), a chemical system of oxidisers, complexing agents, corrosion inhibitors, dispersants, surfactants and pH buffers, and a high-purity carrier fluid \u2014 usually ultrapure water. The exact recipe is tailored to the material being polished.\"}},\n    {\"@type\":\"Question\",\"name\":\"What does the oxidiser do in a metal CMP slurry?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The oxidiser, often hydrogen peroxide, converts the metal surface into a thin, soft oxide layer that the abrasive can remove easily. Its type and concentration are among the most powerful tools for setting the metal removal rate.\"}},\n    {\"@type\":\"Question\",\"name\":\"What is zeta potential and why does it matter?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Zeta potential is a measure of the electrical charge on the abrasive particles. A high magnitude means particles strongly repel one another and stay dispersed; near the isoelectric point the charge collapses and the slurry is prone to agglomeration. Slurries are formulated to operate at a pH that keeps zeta potential high.\"}},\n    {\"@type\":\"Question\",\"name\":\"How does solids loading affect performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Raising solids loading increases the number of abrasive contact points and lifts removal rate up to a saturation point, beyond which rate plateaus while defectivity, cost and stability risk keep rising. Formulators choose a loading that meets the rate target with margin to spare.\"}},\n    {\"@type\":\"Question\",\"name\":\"Why are corrosion inhibitors needed?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Corrosion inhibitors form a protective film on recessed metal features, preventing static chemical etch from attacking lines that are not in mechanical contact with the pad. 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This guide explains what CMP slurry is made of,  &#8230;<\/p>","protected":false},"author":1,"featured_media":2215,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[9,59],"tags":[],"class_list":["post-2213","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-industry"],"acf":[],"_links":{"self":[{"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/posts\/2213","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/comments?post=2213"}],"version-history":[{"count":2,"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/posts\/2213\/revisions"}],"predecessor-version":[{"id":2216,"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/posts\/2213\/revisions\/2216"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/media\/2215"}],"wp:attachment":[{"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/media?parent=2213"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/categories?post=2213"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jeez-semicon.com\/de\/wp-json\/wp\/v2\/tags?post=2213"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}