Overview
Mid-temperature glaze is a ceramic coating material designed to vitrify at kiln temperatures between 1000°C and 1200°C, bridging the gap between low-fire and high-fire glazes. Composed primarily of silica, fluxes (e.g., feldspar), and metal oxide colorants, it is widely used in both artistic and industrial ceramics. Its intermediate firing range allows for vibrant colors while maintaining functional durability, making it a versatile choice for manufacturers. Unlike low-fire glazes, mid-temperature formulations exhibit greater chemical resistance and mechanical strength, suitable for items like dinnerware and architectural tiles. The technology originated as a cost-effective alternative to high-fire processes, reducing energy consumption while preserving aesthetic qualities. Modern formulations may include zirconium or zinc for opacity and boron compounds to lower melting points.
Physical and Chemical Properties
Mid-temperature glazes exhibit a balanced thermal expansion coefficient (typically 6–8 × 10⁻⁶/°C), minimizing crazing risks on compatible clay bodies. Their viscosity during firing allows even coverage without excessive running. Key components like alumina (Al₂O₃) enhance durability, while fluxes such as sodium or calcium oxides adjust the melting behavior. Color development relies on transition metal oxides: cobalt (blue), copper (green), and iron (amber). Opacifiers like tin or zirconium dioxide create opaque finishes. Post-firing, the glaze forms an amorphous glassy matrix with Mohs hardness of 5–6, resistant to acids and abrasion but vulnerable to thermal shock if cooled rapidly.
Main Applications
The primary use of mid-temperature glaze is in decorative and functional ceramics, including stoneware tableware, giftware, and sanitaryware. Its durability against dishwashers and microwaves makes it preferable for commercial dinnerware production. In architecture, it is applied to wall tiles and mosaic works where vivid colors are required. Artisans favor these glazes for handcrafted pottery due to their reliable color results and reduced kiln wear compared to high-fire alternatives. Industrial applications extend to electrical insulators and laboratory ceramics, where consistent dielectric properties are critical. Some formulations meet FDA standards for food safety, expanding use in culinary products.
Safety and Storage
Raw glaze powders require careful handling due to potential inhalation hazards and heavy metal content (e.g., lead in traditional formulations). Suppliers must provide Safety Data Sheets (SDS) specifying precautions for specific compositions. Always use PPE like N95 masks and gloves during mixing. Storage demands airtight containers to prevent moisture absorption, which can alter application properties. Liquid suspensions should be stirred regularly to avoid sedimentation. Dispose of waste according to local regulations, particularly for metal-bearing variants. Kiln venting is essential during firing to prevent fume accumulation.
B2B Procurement Guide
When sourcing mid-temperature glazes industrially, prioritize suppliers with ISO 9001 certification and batch consistency guarantees. Key specifications to request include thermal expansion data, food safety certifications (if applicable), and color stability under UV exposure. Bulk purchases (500+ kg) typically reduce costs by 15–30%. For custom colors or effects, collaborate with manufacturers offering small-batch testing services. Logistics should account for shelf life—powders last 12+ months, while pre-mixed suspensions may degrade in 6 months. Consider regional suppliers to minimize shipping costs for heavy materials. Always audit supplier compliance with REACH or other regional chemical regulations.
Related Manufacturers
- 主营：氧化铝、镍铁粉、钨铁粉、白铅粉、氧化硼、锰铁粉、硅铁粉、二氧化锆、氧化钛粉、球形磁粉、雾化铜粉、钒铁粉末、氧化铋粉、钛铁合金、三氧化钼、氧化镁粉、三氧化二、氧化钴粉、耐火材料、二硫化钨、氧化铬绿、纳米氧化钛、纳米氧化锌、球形磁铁粉、四氧化三铁
- 主营：陶瓷材料、陶瓷颜料、陶瓷熔块、陶瓷色釉料、熔块、高岭土、氧化铝、硅酸锆、氧化锌
- 主营：包裹红、陶瓷熔块、陶瓷细粉、陶瓷釉料、高温陶瓷、花盆艺术、陶瓷色釉、熔块大白、马赛克陶瓷、高温颜色釉、地砖抛釉熔块、低温陶瓷釉粉
- 主营：硫酸镁、氟硅酸钠、草酸、硼酸、硼砂、柠檬酸铵、氯化钾、尿素
- 主营：硫酸钡
- 主营：高岭土系列、石英系列、石棉纤维系列、海泡石系列、悬浮剂增稠剂系列、耐火材料系列、氧化铁颜料系列、碳酸钙系列、陶土系列、橡胶粉系列、硅藻土、火山石、汇算镁铝、粉煤灰、硅灰、矿粉、介质棉、红土、石英砂、硅线石、蓝晶石、蛭石、脱膜粉、硅酸铝
- 主营：滑石粉
- 主营：轻钙、碳酸钙、贝壳粉、重钙粉、膨润土、高岭土、微硅粉、硅藻土、玻璃粉、火山岩、火山石、硅灰、石英粉、重钙、珍珠岩粉、滑石粉、煤矸石粉、白云石粉、铝矾土、硅酸铝纤维、蛭石粉、白色鹅卵石、麦饭石粉、陶瓷纤维、长石粉
- 主营：滑石粉、超细滑石粉、重钙粉、超细重钙粉、碳酸钙、方解石粉、白云石粉、菱镁石粉、氧化镁、超细氧化镁、水镁石粉、氢氧化镁、绿泥石粉、石英砂、白砂、煅烧滑石粉、海城滑石粉、塑料级滑石粉、工业级滑石粉、微细滑石粉、滑石粉1250目、滑石粉800目、涂料级滑石粉
- 主营：杀菌剂、椰子油、印染剂、阻燃剂、油酸锌、润湿剂、硫酸铯、催化剂、粘合剂、乳化剂、草酸锰、硫酸锂、石英砂、绝缘油、茶皂素、防腐剂、醋酸镁、锂电池、碘化锂、培养基、蒸馏水、硬脂酸、塑化剂、草酸钾、磷酸铁
- 主营：氟金云母、云母片、云母粉、高岭土、滑石粉、碳酸钙、石墨粉、电气石、岩片、膨润土、陶土、海泡石、白炭黑、重晶石粉、沸石、石英砂、透明粉、粘土、蛭石、硅藻土、玻璃鳞片、果壳粉
- 主营：油漆陶瓷原料、添加用硅酸铝粉、煅烧高岭土、釉料、水洗高岭土、滑石粉、膨润土、黄陶土、红陶土、轻质碳酸钙、重质碳酸钙、铝矾土、重晶石粉、石英砂、沸石粉、海泡石
- 主营：过硫酸铵、过硫酸钠、过硫酸钾、沉淀硫酸钡、草酸、片碱、大苏打、氯化钾、纯碱、滑石粉、氯化镁、硫酸镁、聚合氯化铝、硫酸亚铁、硫化钡、氯化钡、聚丙烯酰胺、碳酸钡、尿素、硼酸、硼砂、氯化钙、工业盐、磷酸二氢铵、碳酸钙
- 主营：石油焦、石墨粉、膨胀石墨、海泡石、矿物纤维、云母、蛭石、橡胶颗粒、轮胎粉、漂珠、重晶石、膨润土、碳酸钙、叶腊石、人造石墨、鳞片石墨、木质纤维、喷涂棉、钾长石、氧化铝、铝矾土、滑石粉、配重砂、硅藻土
- 主营：石墨、膨胀石墨、导电石墨粉、滤料釉料白垩土、防静电墨粉、阻燃石墨粉、鳞片石墨粉、超细石墨粉、云母、云母片、茶色云母片、云母粉、电气石、电气石粉、电气石颗粒、天然云母片、透明云母片、导热石墨、绝缘云母片、耐高温云母、云母板、岩片、贝壳片、膨润土、钙基膨润土、纳基膨润土
- 主营：滑石粉、莫来砂、宝珠砂、脱硫石膏、活性白土、重钙粉、轻钙粉、玻璃鳞片、沸石粉、配重砂、石英砂、膨润土粉、硅灰粉、硅藻土、膨润土颗粒、地坪材料、碳酸钙、萤石粉、珍珠岩
- 主营：石英粉、胶黏剂、石英砂、硅石粉、硅微粉、陶瓷粉、硅橡胶、树脂砂、石榴砂、水处理石英砂、铸造石英砂、熔融石英砂、软性复合硅微粉、方石英粉、熔融石英粉、结晶石英粉、熔融硅微粉、超细硅微粉、结晶硅微粉、超细石英粉、高纯方石英粉、超白微硅粉、高纯硅微粉、高纯石英砂、球形硅微粉
- 主营：超细硅酸铝粉、硅藻土、膨润土、高岭土、滑石粉、彩砂、透明粉、白炭黑、金刚砂、石墨、海泡石、木粉、轻钙、重钙、玻璃粉、贝壳粉、凹凸棒土、玻璃鳞片、陶土、铝矾土、火山岩、电气石粉、合成云母、赤铁粉