Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Boron carbide ceramic metallization preparation method
The intention discloses a boron carbide ceramic metallization preparation method. The method comprises the following steps: S1, mixing powder, namely weighing 10-40wt% of Mo, 10-40wt% of W and 10-40wt% of Ni according to a weight ratio, carrying out ball milling, and sieving through a 300-mesh sieve to obtain mixed metal powder; S2,preparing paste, namely mixing the metal powder obtained in the step S1 with 5% by weight of an ethyl cellulose solution according to a weight ratio of (100-120): 30 to obtain metallized paste; S3,printing, namely printing the metallized paste obtained in the step S2 on the part, needing to be metalized, of a boron carbide ceramic part with the thickness of 20-30 microns, and drying; and S4, metallizing, namely putting the boron carbide ceramic part dried in theS3 into a metallization sintering furnace, introducing hydrogen, keeping the temperature at 1650-1680 DEG C for 30-35 minutes, keeping the dew point at 0-10 DEG C, and cooling along with the furnace.The formed Mo, W and Ni proportioned metallized layer alloy material is close to a thermal expansion system of boron carbide, the bonding strength is high, and the metallized stress is small. Due tothe submicron metal network structure, the metal is not prone to falling off after being brazed.
本发明公开了一种碳化硼陶瓷金属化制备方法，包括以下步骤：S1：混粉；将重量比份的Mo(10‑40wt％)、W(10‑40wt％)、Ni(10‑40wt％)按配比称量球磨，过300目筛得到混合金属粉料；S2：配膏；将所述S1所得的金属粉料按重量比份100‑120：30的比例与5％重量比份的乙基纤维素溶液混合，得到金属化膏剂；S3：印刷；将所述S2所得的金属化膏剂印刷在碳化硼陶瓷件需要金属化部位，厚度20‑30μm，烘干；S4：金属化；将S3中烘干后的碳化硼陶瓷件放入金属化烧结炉中，通入氢气，1650℃‑1680℃保温30‑35分钟，露点0‑10℃，随炉降温。本发明中形成的Mo、W、Ni配比金属化层合金材料与碳化硼的热膨胀系统接近，其粘接强度高，金属化应力小。由于具有亚微米级的金属网络结构，在钎焊后不容易脱落。
Boron carbide ceramic metallization preparation method
The intention discloses a boron carbide ceramic metallization preparation method. The method comprises the following steps: S1, mixing powder, namely weighing 10-40wt% of Mo, 10-40wt% of W and 10-40wt% of Ni according to a weight ratio, carrying out ball milling, and sieving through a 300-mesh sieve to obtain mixed metal powder; S2,preparing paste, namely mixing the metal powder obtained in the step S1 with 5% by weight of an ethyl cellulose solution according to a weight ratio of (100-120): 30 to obtain metallized paste; S3,printing, namely printing the metallized paste obtained in the step S2 on the part, needing to be metalized, of a boron carbide ceramic part with the thickness of 20-30 microns, and drying; and S4, metallizing, namely putting the boron carbide ceramic part dried in theS3 into a metallization sintering furnace, introducing hydrogen, keeping the temperature at 1650-1680 DEG C for 30-35 minutes, keeping the dew point at 0-10 DEG C, and cooling along with the furnace.The formed Mo, W and Ni proportioned metallized layer alloy material is close to a thermal expansion system of boron carbide, the bonding strength is high, and the metallized stress is small. Due tothe submicron metal network structure, the metal is not prone to falling off after being brazed.
本发明公开了一种碳化硼陶瓷金属化制备方法，包括以下步骤：S1：混粉；将重量比份的Mo(10‑40wt％)、W(10‑40wt％)、Ni(10‑40wt％)按配比称量球磨，过300目筛得到混合金属粉料；S2：配膏；将所述S1所得的金属粉料按重量比份100‑120：30的比例与5％重量比份的乙基纤维素溶液混合，得到金属化膏剂；S3：印刷；将所述S2所得的金属化膏剂印刷在碳化硼陶瓷件需要金属化部位，厚度20‑30μm，烘干；S4：金属化；将S3中烘干后的碳化硼陶瓷件放入金属化烧结炉中，通入氢气，1650℃‑1680℃保温30‑35分钟，露点0‑10℃，随炉降温。本发明中形成的Mo、W、Ni配比金属化层合金材料与碳化硼的热膨胀系统接近，其粘接强度高，金属化应力小。由于具有亚微米级的金属网络结构，在钎焊后不容易脱落。
Boron carbide ceramic metallization preparation method
一种碳化硼陶瓷金属化制备方法
CAO PEIFU (Autor:in) / CAO JIANPING (Autor:in) / CAO JIANHUI (Autor:in)
10.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2024