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Preparation method of density-adjustable metal-ceramic composite grinding medium
The invention relates to the technical field of grinding media, and discloses a preparation method of a density-adjustable metal-ceramic composite grinding medium, which comprises the following steps: by taking urea as a precipitator and oleic acid as a surfactant, carrying out hydrothermal reaction and calcination on aluminum nitrate to generate micro-nano aluminum oxide microspheres, and sintering the micro-nano aluminum oxide microspheres with gadolinium nitrate and a sintering aid to obtain the density-adjustable metal-ceramic composite grinding medium. Gadolinium is doped into crystal lattices of aluminum oxide, so that the bonding strength of a crystal interface of the aluminum oxide is improved, and the strength and the hardness of the aluminum oxide microspheres are improved. Gadolinium-doped aluminum oxide microspheres are used as a main component of the grinding medium and are compounded with nano zirconium oxide, corundum, kaolin, calcium carbonate and nano silicon dioxide, the density-adjustable metal-ceramic composite grinding medium is obtained by optimizing and adjusting the proportion, the raw materials are cheap and easy to obtain, the cost is low, and the application range is wide. The composite grinding medium has the advantages of high hardness, low wear rate and adjustable density.
本发明涉及研磨介质技术领域，且公开了一种密度可调的金属‑陶瓷复合研磨介质的制备方法，以尿素作为沉淀剂，油酸作为表面活性剂，硝酸铝经过水热反应和煅烧，生成微纳米氧化铝微球，然后与硝酸钆和烧结助剂进行烧结，得到钆掺杂氧化铝微球，钆掺杂进入氧化铝的晶格，提高了氧化铝的晶体界面的结合强度，提高了氧化铝微球的强度和硬度。以钆掺杂氧化铝微球作为研磨介质主要成分和纳米氧化锆，与刚玉、高岭土、碳酸钙、纳米二氧化硅复配，并通过优化和调节比例，得到密度可调的金属‑陶瓷复合研磨介质，原料廉价易得，成本低廉，复合研磨介质具有硬度高、磨损率低、密度可调的优点。
Preparation method of density-adjustable metal-ceramic composite grinding medium
The invention relates to the technical field of grinding media, and discloses a preparation method of a density-adjustable metal-ceramic composite grinding medium, which comprises the following steps: by taking urea as a precipitator and oleic acid as a surfactant, carrying out hydrothermal reaction and calcination on aluminum nitrate to generate micro-nano aluminum oxide microspheres, and sintering the micro-nano aluminum oxide microspheres with gadolinium nitrate and a sintering aid to obtain the density-adjustable metal-ceramic composite grinding medium. Gadolinium is doped into crystal lattices of aluminum oxide, so that the bonding strength of a crystal interface of the aluminum oxide is improved, and the strength and the hardness of the aluminum oxide microspheres are improved. Gadolinium-doped aluminum oxide microspheres are used as a main component of the grinding medium and are compounded with nano zirconium oxide, corundum, kaolin, calcium carbonate and nano silicon dioxide, the density-adjustable metal-ceramic composite grinding medium is obtained by optimizing and adjusting the proportion, the raw materials are cheap and easy to obtain, the cost is low, and the application range is wide. The composite grinding medium has the advantages of high hardness, low wear rate and adjustable density.
本发明涉及研磨介质技术领域，且公开了一种密度可调的金属‑陶瓷复合研磨介质的制备方法，以尿素作为沉淀剂，油酸作为表面活性剂，硝酸铝经过水热反应和煅烧，生成微纳米氧化铝微球，然后与硝酸钆和烧结助剂进行烧结，得到钆掺杂氧化铝微球，钆掺杂进入氧化铝的晶格，提高了氧化铝的晶体界面的结合强度，提高了氧化铝微球的强度和硬度。以钆掺杂氧化铝微球作为研磨介质主要成分和纳米氧化锆，与刚玉、高岭土、碳酸钙、纳米二氧化硅复配，并通过优化和调节比例，得到密度可调的金属‑陶瓷复合研磨介质，原料廉价易得，成本低廉，复合研磨介质具有硬度高、磨损率低、密度可调的优点。
Preparation method of density-adjustable metal-ceramic composite grinding medium
一种密度可调的金属-陶瓷复合研磨介质的制备方法
REN YONGGUO (Autor:in) / ZHU ZHENYU (Autor:in) / WEI XIAOWEI (Autor:in) / FAN XIAOYOU (Autor:in)
23.06.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
B02C
CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL
,
Brechen, Pulverisieren oder Zerkleinern allgemein
/
B82Y
Bestimmter Gebrauch oder bestimmte Anwendung von Nanostrukturen
,
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C01G
Verbindungen der von den Unterklassen C01D oder C01F nicht umfassten Metalle
,
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
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