Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of boron nitride composite material
The invention discloses a preparation method of a boron nitride composite material. The preparation method of the boron nitride composite material comprises the following steps: mixing of raw materials: putting the raw materials into a stirring barrel, adding 40% by mass of alcohol, starting a stirrer for mixing for 3 hours, mashing the dried materials, and sieving the mashed materials through a 50-mesh sieve; powder filling, wherein the filling is completed in 2-5 procedures, loading is conducted 10 times in each procedure, a pressure intensity of 1-10 MPa is slowly applied, and pre-pressingfilling density is smaller than 40%-55%; and sintering, wherein a heating rate is 8-12 DEG C/min, a pressurizing temperature is 1000-1200 DEG C, pressurizing is slowly conducted at a rate of 0.5-5 MPaeach time, a pressure is kept at 26 MPa, a sintering temperature is 1700 DEG C, and heat preservation time is longer than 2 hours until a stroke is not changed, so it is guaranteed that all the sintered products have high density. Alcohol wet mixing is adopted in the invention to ensure that powder is fully and uniformly mixed, and boron nitride does not generate hydrolyzed boron oxide to influence the high-temperature use performance of the product; and granulating and sieving with the 50-mesh sieve are carried out to ensure that granulated raw material particles are uniform and the performance of each sintered product is uniform.
一种氮化硼复合材料的制备方法，包括：将原料置于搅拌桶内，加入40％质量分数的酒精，开启搅拌机混合3小时；将烘干的物料捣碎，过50目筛网；粉体填装，分2‑5道工序填装，每道分10次装料，并缓慢施加压强1‑10MPa，预压填装致密度小于40‑55％；升温速率8‑12℃/min，加压温度1000‑1200℃，缓慢加压0.5‑5MPa递增，并保压26MPa，烧结温度1700℃，保温时间大于2小时至行程不变，保证烧结产品均有高的致密度。本发明采用酒精湿法混合保证粉体充分均匀混合，且氮化硼不产生水解氧化硼影响产品高温使用性能；造粒过50目筛，保证造粒后原料颗粒均匀，保证烧结后各项产品性能的均匀。
Preparation method of boron nitride composite material
The invention discloses a preparation method of a boron nitride composite material. The preparation method of the boron nitride composite material comprises the following steps: mixing of raw materials: putting the raw materials into a stirring barrel, adding 40% by mass of alcohol, starting a stirrer for mixing for 3 hours, mashing the dried materials, and sieving the mashed materials through a 50-mesh sieve; powder filling, wherein the filling is completed in 2-5 procedures, loading is conducted 10 times in each procedure, a pressure intensity of 1-10 MPa is slowly applied, and pre-pressingfilling density is smaller than 40%-55%; and sintering, wherein a heating rate is 8-12 DEG C/min, a pressurizing temperature is 1000-1200 DEG C, pressurizing is slowly conducted at a rate of 0.5-5 MPaeach time, a pressure is kept at 26 MPa, a sintering temperature is 1700 DEG C, and heat preservation time is longer than 2 hours until a stroke is not changed, so it is guaranteed that all the sintered products have high density. Alcohol wet mixing is adopted in the invention to ensure that powder is fully and uniformly mixed, and boron nitride does not generate hydrolyzed boron oxide to influence the high-temperature use performance of the product; and granulating and sieving with the 50-mesh sieve are carried out to ensure that granulated raw material particles are uniform and the performance of each sintered product is uniform.
一种氮化硼复合材料的制备方法，包括：将原料置于搅拌桶内，加入40％质量分数的酒精，开启搅拌机混合3小时；将烘干的物料捣碎，过50目筛网；粉体填装，分2‑5道工序填装，每道分10次装料，并缓慢施加压强1‑10MPa，预压填装致密度小于40‑55％；升温速率8‑12℃/min，加压温度1000‑1200℃，缓慢加压0.5‑5MPa递增，并保压26MPa，烧结温度1700℃，保温时间大于2小时至行程不变，保证烧结产品均有高的致密度。本发明采用酒精湿法混合保证粉体充分均匀混合，且氮化硼不产生水解氧化硼影响产品高温使用性能；造粒过50目筛，保证造粒后原料颗粒均匀，保证烧结后各项产品性能的均匀。
Preparation method of boron nitride composite material
一种氮化硼复合材料的制备方法
JIANG MING (Autor:in) / LUO JIAWEI (Autor:in) / YUE FENG (Autor:in)
23.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
Preparation method of boron nitride-spinel composite material
| Europäisches Patentamt | 2024
Preparation method of nano-diamond/boron nitride composite material
| Europäisches Patentamt | 2023
Boron nitride nanotube Composite material and preparation method thereof
| Europäisches Patentamt | 2020
Boron nitride nanotube Composite material and preparation method thereof
Europäisches Patentamt | 2020
Preparation method of toughened boron nitride nanosheet silicon nitride ceramic composite material
| Europäisches Patentamt | 2021