Szczegóły publikacji
Opis bibliograficzny
Method for obtaining a high refractory composite from boron carbide and intermetallic compound of the $Ti-Si$ system / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie ; wynalazca: KOZIEŃ Dawid, PĘDZICH Zbigniew, CHLUBNY Leszek. — Int.Cl.: C04B 35/58(2006.01). — European Patent Office. — Opis zgłoszeniowy wynalazku ; EP4056540A1 ; Opubl. 2022-09-14. — Zgłosz. nr EP21210716 z dn. 2021-11-26
Autorzy (3)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 144631 |
|---|---|
| Data dodania do BaDAP | 2023-01-13 |
| Tekst źródłowy | URL |
| Rok publikacji | 2022 |
| Typ publikacji | zgłoszenie patentowe |
| Otwarty dostęp |  |
Abstract
The invention relates to a method of obtaining a high-temperature refractory composite from boron carbide and an intermetallic compound of the Ti-Si system, intended for the components of gas turbines, components of rocket engine and structural components of flying vehicles operated at high temperatures. Titanium silicide TisSi3 and carbon C are added to boron carbide B4C powder in a molar ratio of B4C:Ti5Si3:C of 5:2:1, and subsequently, all components are mixed in an isopropyl alcohol environment for 20-60 minutes and are dried until complete evaporation of the alcohol for 20-120 minutes, and then, shaped pieces are pre-formed and subjected to isostatic pressing at a pressure of 100-200 MPa, and the compacts obtained are subjected to free sintering process in an argon atmosphere at a temperature of 1650-1750°C, with a temperature increase of 2-10°C/minute and a holding time at the maximum temperature of 5-30 minutes, and thus TiB2-TiC-SiC-Ti5Si3 composite consisting of 70.0-75.0% TiB2, 0.5-2.5% TiC, 20.0-27.5% SiC and 0.2-1.0% Ti5Si3 by weight is obtained. The process yield is at least 99%.