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Preparation method of high-toughness and high-hardness alumina-based wear-resistant ceramic
The invention relates to a preparation method of high-toughness and high-hardness alumina-based wear-resistant ceramic. The method comprises the steps of 1, raw material grinding, 2, spray granulation, 3, biscuit pressing, 4, biscuit sintering, 5, sand blasting treatment, 6, wear-resistant coating attachment and 7, packaging and warehousing. Aluminum oxide is used as matrix, silicon carbide and zirconium oxide are used as reinforcing phases; magnesium carbonate is used as a sintering aid, silicon carbide, zirconium oxide and aluminum oxide can form an intragranular/intergranular mixed structure, cracks are expanded from intergranular to intragranular and then to intergranular paths, more breaking energy is consumed, and a breaking mode of mixing along crystals/through crystals is formed sothat the comprehensive mechanical property of the composite material is greatly improved; magnesium carbonate is used as a sintering aid, the sintering temperature can be reduced, crystal grains areprevented from growing up, the method is scientific and rigorous, a wear-resistant green body can be formed in the sintering process, a silicon carbide and zirconium carbide mixed layer is formed in the chemical deposition process, and the wear resistance of the wear-resistant ceramic is effectively enhanced.
本发明涉及一种高韧性、高硬度氧化铝基耐磨陶瓷的制备方法。该方法包括步骤一：原料研磨，步骤二：喷雾造粒，步骤三：素坯压制，步骤四：素坯烧结，步骤五：喷砂处理，步骤六：附着耐磨涂层，步骤七：包装入库。由于氧化铝为基体，碳化硅、氧化锆作为增强相，碳酸镁为烧结助剂，碳化硅与氧化锆可以与氧化铝形成晶内/晶间混合型结构，裂纹从晶间到晶内再到晶间的路径扩展，消耗了更多的断裂能，形成了沿晶/穿晶混合的断裂模式，从而大大提高复合材料的综合力学性能；碳酸镁作为烧结助剂，可以降低烧结温度，防止晶粒的长大，该方法科学严谨，烧结过程中能够形成耐磨坯体，化学沉积过程中形成碳化硅与碳化锆混合层，有效增强耐磨陶瓷的耐磨性。
Preparation method of high-toughness and high-hardness alumina-based wear-resistant ceramic
The invention relates to a preparation method of high-toughness and high-hardness alumina-based wear-resistant ceramic. The method comprises the steps of 1, raw material grinding, 2, spray granulation, 3, biscuit pressing, 4, biscuit sintering, 5, sand blasting treatment, 6, wear-resistant coating attachment and 7, packaging and warehousing. Aluminum oxide is used as matrix, silicon carbide and zirconium oxide are used as reinforcing phases; magnesium carbonate is used as a sintering aid, silicon carbide, zirconium oxide and aluminum oxide can form an intragranular/intergranular mixed structure, cracks are expanded from intergranular to intragranular and then to intergranular paths, more breaking energy is consumed, and a breaking mode of mixing along crystals/through crystals is formed sothat the comprehensive mechanical property of the composite material is greatly improved; magnesium carbonate is used as a sintering aid, the sintering temperature can be reduced, crystal grains areprevented from growing up, the method is scientific and rigorous, a wear-resistant green body can be formed in the sintering process, a silicon carbide and zirconium carbide mixed layer is formed in the chemical deposition process, and the wear resistance of the wear-resistant ceramic is effectively enhanced.
本发明涉及一种高韧性、高硬度氧化铝基耐磨陶瓷的制备方法。该方法包括步骤一：原料研磨，步骤二：喷雾造粒，步骤三：素坯压制，步骤四：素坯烧结，步骤五：喷砂处理，步骤六：附着耐磨涂层，步骤七：包装入库。由于氧化铝为基体，碳化硅、氧化锆作为增强相，碳酸镁为烧结助剂，碳化硅与氧化锆可以与氧化铝形成晶内/晶间混合型结构，裂纹从晶间到晶内再到晶间的路径扩展，消耗了更多的断裂能，形成了沿晶/穿晶混合的断裂模式，从而大大提高复合材料的综合力学性能；碳酸镁作为烧结助剂，可以降低烧结温度，防止晶粒的长大，该方法科学严谨，烧结过程中能够形成耐磨坯体，化学沉积过程中形成碳化硅与碳化锆混合层，有效增强耐磨陶瓷的耐磨性。
Preparation method of high-toughness and high-hardness alumina-based wear-resistant ceramic
一种高韧性、高硬度氧化铝基耐磨陶瓷的制备方法
XU ZHENGPING (author) / SHI YANMIN (author) / LONG CHENGYONG (author)
2020-10-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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