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Aluminum oxide-yttrium oxide core-shell structure/nickel-based composite powder and laser cladding coating
The invention belongs to the technical field of laser cladding metal-based composite coatings, and particularly relates to aluminum oxide-yttrium oxide core-shell structure/nickel-based composite powder and a laser cladding coating. The preparation method of the composite powder comprises the following steps: dispersing yttrium nitrate and alpha-Al2O3 in deionized water, adding urea, heating and stirring to obtain mixed powder, cleaning and drying the mixed powder to obtain precursor powder, and calcining the precursor powder to obtain aluminum oxide-yttrium oxide core-shell structure powder; the aluminum oxide-yttrium oxide core-shell structure powder and nickel-based powder are mixed, absolute ethyl alcohol is added for wet grinding and mixing, obtained mixed slurry is dried, and the aluminum oxide-yttrium oxide core-shell structure nickel-based composite material is obtained. And the composite powder is pre-arranged on the surface of a pretreated base body for laser cladding, and then the composite laser cladding coating can be obtained. The rare earth oxide is used for wrapping the hard phase, and the characteristics of refining grains, purifying the structure, reducing the dilution rate and improving the coating structure and mechanical property of rare earth elements can be fully played, so that the forming quality and performance of the cladding layer are improved.
本发明属于激光熔覆金属基复合涂层技术领域，具体涉及一种氧化铝‑氧化钇核壳结构/镍基复合粉末及激光熔覆涂层。复合粉末的制备方法包括以下步骤：将硝酸钇和α‑Al2O3分散在去离子水中，加入尿素后加热搅拌得到混合粉末，混合粉末经清洗、干燥后得到前驱体粉末，前驱体粉末煅烧得到氧化铝‑氧化钇核壳结构粉末；将氧化铝‑氧化钇核壳结构粉末与镍基粉末混合后加入无水乙醇进行湿磨混合，得到的混合浆料干燥后即得。将复合粉末预置在预处理的基体表面进行激光熔覆即可获得复合激光熔覆涂层。利用稀土氧化物包裹硬质相，可充分发挥稀土元素细化晶粒、净化组织、降低稀释率、改善涂层组织和力学性能的特性从而提高熔覆层成形质量及性能。
Aluminum oxide-yttrium oxide core-shell structure/nickel-based composite powder and laser cladding coating
The invention belongs to the technical field of laser cladding metal-based composite coatings, and particularly relates to aluminum oxide-yttrium oxide core-shell structure/nickel-based composite powder and a laser cladding coating. The preparation method of the composite powder comprises the following steps: dispersing yttrium nitrate and alpha-Al2O3 in deionized water, adding urea, heating and stirring to obtain mixed powder, cleaning and drying the mixed powder to obtain precursor powder, and calcining the precursor powder to obtain aluminum oxide-yttrium oxide core-shell structure powder; the aluminum oxide-yttrium oxide core-shell structure powder and nickel-based powder are mixed, absolute ethyl alcohol is added for wet grinding and mixing, obtained mixed slurry is dried, and the aluminum oxide-yttrium oxide core-shell structure nickel-based composite material is obtained. And the composite powder is pre-arranged on the surface of a pretreated base body for laser cladding, and then the composite laser cladding coating can be obtained. The rare earth oxide is used for wrapping the hard phase, and the characteristics of refining grains, purifying the structure, reducing the dilution rate and improving the coating structure and mechanical property of rare earth elements can be fully played, so that the forming quality and performance of the cladding layer are improved.
本发明属于激光熔覆金属基复合涂层技术领域，具体涉及一种氧化铝‑氧化钇核壳结构/镍基复合粉末及激光熔覆涂层。复合粉末的制备方法包括以下步骤：将硝酸钇和α‑Al2O3分散在去离子水中，加入尿素后加热搅拌得到混合粉末，混合粉末经清洗、干燥后得到前驱体粉末，前驱体粉末煅烧得到氧化铝‑氧化钇核壳结构粉末；将氧化铝‑氧化钇核壳结构粉末与镍基粉末混合后加入无水乙醇进行湿磨混合，得到的混合浆料干燥后即得。将复合粉末预置在预处理的基体表面进行激光熔覆即可获得复合激光熔覆涂层。利用稀土氧化物包裹硬质相，可充分发挥稀土元素细化晶粒、净化组织、降低稀释率、改善涂层组织和力学性能的特性从而提高熔覆层成形质量及性能。
Aluminum oxide-yttrium oxide core-shell structure/nickel-based composite powder and laser cladding coating
氧化铝-氧化钇核壳结构/镍基复合粉末及激光熔覆涂层
MA XINGHUA (author) / YIN YU (author) / ZHANG SHULING (author) / GUO FENG (author)
2024-01-05
Patent
Electronic Resource
Chinese
Preparation method of plasma spraying yttrium oxide coating powder
| European Patent Office | 2022