TRUNNANO publishes guide to nine advanced ceramic crucible materials

TRUNNANO released a selection guide on nine advanced ceramic crucible materials to help engineers choose the right option for high-temperature industrial use. The company says the guide is meant to reduce process bottlenecks, extend service life and lower costs across metallurgy, semiconductors, new energy and research applications.

Why it matters: - The guide is aimed at improving crucible selection in high-temperature industrial processes where the wrong material can shorten service life, raise contamination risk and increase costs. - The release targets engineers working in metallurgy, semiconductors, new energy and research, where containment materials face corrosive melts, thermal shock and oxidation. - TRUNNANO says the selection framework is meant to help users match material properties to process demands and avoid performance failures at the source.

What happened: - TRUNNANO released its "Selection Guide for Advanced Ceramic Crucible Materials" on July 30, 2026, through its advanced ceramics website, ozbo.com. - The guide covers nine ceramic crucible materials: aluminum nitride, alumina, boron carbide, boron nitride, fused silica, silicon carbide, silicon nitride, alumina-mullite and silicon carbide-bonded silicon nitride. - The company says the guide evaluates processability, failure modes and service life for each material.

The details: - Alumina crucibles offer high hardness, good electrical insulation and a maximum service temperature of 1750°C. - Alumina-mullite combines high-temperature performance with creep resistance and thermal shock resistance, and its strength and toughness at 1300°C are about 1.7 times room-temperature levels. - Fused silica has very low thermal expansion, can withstand repeated cycling between 1000°C and cold water without cracking, and resists many molten metals including Zn, Cd, Li and Na. - Silicon carbide reaches thermal conductivity of 125.6 W/m·K and an air service temperature up to 1900°C, with strong wear resistance and chemical stability. - Silicon nitride is highlighted for thermal shock resistance, fracture toughness and oxidation resistance. - Aluminum nitride has thermal conductivity of 170–200 W/m·K and is used to improve temperature-field uniformity in crucible applications. - Boron nitride is machinable with conventional cutting tools, does not wet most molten metals and works as a high-temperature electrical insulator. - Boron carbide is the hardest material after diamond and cubic boron nitride, but its cost and sintering difficulty limit general crucible use. - Silicon carbide-bonded silicon nitride combines high thermal conductivity, thermal shock resistance, density and oxidation resistance, and is suited for melting aluminum and copper alloys with low contamination. - TRUNNANO says it can supply high-purity crucibles and custom components in all nine material systems, including products at 99.7% purity and above. - The company says the material systems are already used in high-purity metal smelting, lithium-ion battery cathode material sintering, rare-earth permanent magnet preparation and semiconductor crystal growth.

Between the lines: - The guide is also a sales and positioning tool. It frames TRUNNANO as a technical authority while steering customers toward a narrower, application-based materials decision. - The focus on failure modes suggests the company is emphasizing lifecycle cost, not just upfront material price. - The inclusion of both oxide and non-oxide ceramics signals an attempt to cover a wide range of industrial use cases rather than one niche market.

What's next: - TRUNNANO says it will continue promoting advanced ceramic material innovation and technical services through TRUNNANO and ozbo.com. - The company expects the guide to support more scientific material selection and to help customers reduce risk, cost and process losses in high-temperature applications.

The bottom line: - TRUNNANO is trying to turn materials selection into a clearer engineering decision, with a guide that links crucible chemistry to performance, cost and service life.