文章信息/Info

Title:

Overview of High Temperature Oxidation Resistance��Coatings on Refractory Metals

作者:

張緒虎; 徐方濤; 賈中華; 李海慶; 何開民; 陳道勇

(航天材料及工藝研究所，北京，100076)

Author(s):

ZHANG Xuhu;  XU Fangtao;  JIA Zhonghua;  LI Haiqing;  HE Kaimin;  CHEN Daoyong

(Aerospace Research Institute of Material & Processing Technology ,Beijing 100076， China)

關(guān)鍵詞:

難熔金屬; 姿/軌控發(fā)動(dòng)機(jī); 推力室; 高溫抗氧化; 涂層

DOI:

10.7502/j.issn.1674-3962.2013.04.02

文獻(xiàn)標(biāo)志碼:

A

摘要:

概述了國內(nèi)外難熔金屬表面高溫抗氧化涂層的研制現(xiàn)狀。涂層主要分為5大體系，其中硅化物涂層是應(yīng)用最為廣泛的涂層體系，高溫氧化環(huán)境下硅化物能夠生成玻璃態(tài)SiO��2，有效阻擋氧向內(nèi)部擴(kuò)散，起到防護(hù)作用。貴金屬體系是抗氧化性能更為優(yōu)越的材料體系，其中Re/Ir是目前性能最高的高溫抗氧化材料，Ir涂層的致密性及厚度是決定其抗氧化壽命的主要因素。國內(nèi)目前已形成自1 200 ℃至2 000 ℃應(yīng)用的一代鈮鉿合金涂覆硅化物涂層、二代鈮鎢合金涂覆硅化物涂層、三代錸基材涂覆銥涂層共三代材料體系，其中一代廣泛應(yīng)用于衛(wèi)星、飛船等多種型號(hào)產(chǎn)品，二代應(yīng)用于衛(wèi)星并于2012年5月首飛成功。目前國內(nèi)致力于Re/Ir材料體系的工程化應(yīng)用研究，已進(jìn)行短噴管試車，試車溫度高達(dá)2 090 ℃，累計(jì)時(shí)間300 s，涂層未失效。

Abstract:

The overview is about the development and trend of high temperature oxidation resistance coatings on refractory metals. Silicide coatings on Nb alloy have been using widely, as glass phase SiO��2 is formed at high temperature oxidation environment. Re/Ir is considered as best material of high temperature oxidation resistance, and the life of Ir coating is affected by thickness and compactness. In China, three generations materials used for 1 200~2 000 ℃have been developed, including 1st generation NbHf alloy using silicide coating, 2nd generation NbW alloy using silicide coating and 3rd generation Re using Ir coating. The 1st and 2st have been used to satellite and airships. Now engineering application study of the Re/Irmaterial is proceeding. Short nozzle of Re/Ir has been tested, and the temperature of combustion chamber wall reached 2 090 ℃,for 300 s without failure.��