文章信息/Info

Title:

Interdiffusion Behavior of Interface Elements Between DD91 Substrate/NiCrAlY Coating

文章編號(hào):

1674-3962(2026)01-0022-08

作者:

章孝琴; 王衛(wèi)澤; 劉帥男; 劉朋朋

1.華東理工大學(xué)機(jī)械與動(dòng)力工程學(xué)院，上海 200237 2.上海飛行器力學(xué)與控制研究院，上海 200237

Author(s):

ZHANG Xiaoqin ; WANG Weize; LIU Shuainan; LIU Pengpeng

1. School of Mechanical and Power Engineering, East China University of Science and Technology，Shanghai 200237，China 2. Shanghai Institute of Aircraft Mechanics and Control，Shanghai 200237，China

關(guān)鍵詞:

NiCrAlY涂層; DD91鎳基單晶合金; 大氣等離子噴涂; 互擴(kuò)散; 熱暴露

Keywords:

NiCrAlY coating; DD91 nickel-based single crystal alloy; atmospheric plasma spraying; interdiffusion; thermal exposure

分類號(hào):

TG174.442+.1

DOI:

10.7502/j.issn.1674-3962.202406032

文獻(xiàn)標(biāo)志碼:

A

摘要:

為研究NiCrAlY涂層與DD91鎳基單晶合金的互擴(kuò)散行為，采用大氣等離子噴涂技術(shù)在鎳基單晶合金DD91基體表面沉積NiCrAlY涂層，在1150 ℃下對(duì)試樣進(jìn)行不同時(shí)間的熱暴露處理，通過SEM、EDS、XRD等方法研究了基體與涂層界面元素互擴(kuò)散行為和顯微組織變化。研究結(jié)果表明：在1150 ℃熱暴露下，NiCrAIY涂層中的Ni和Cr元素由涂層向基體擴(kuò)散；Co，Al，Ta，Re，Ru，W和Mo元素則是由基體向涂層擴(kuò)散。在涂層和基體界面處形成了互擴(kuò)散區(qū)，互擴(kuò)散區(qū)厚度隨著熱暴露時(shí)間的延長而增加并逐漸穩(wěn)定；在熱暴露50 h時(shí)互擴(kuò)散區(qū)下方析出大量拓?fù)涿芏严�，隨著熱暴露時(shí)間延長，拓?fù)涿芏严嘤秩芙庥诨�體中。

Abstract:

In order to investigate the interdiffusion behaviors between NiCrAlY coating and nickel-based single crystal alloy DD91, NiCrAlY coating was deposited on the surface of nickel-based single crystal alloy DD91 substrate by atmospheric plasma spraying technology. The samples were thermally exposed at 1150 ℃ for different time. The interdiffusion behavior of elements and microstructure changes at the interface between substrate and coating were studied by SEM，EDS and XRD. The results showed that under the condition of 1150 ℃，Ni and Cr elements in the NiCrAIY coating diffuse from the coating to the substrate. Co, Al, Ta, Re, Ru, W and Mo elements diffuse from the substrate to the coating. The interdiffusion zone (IDZ) was formed at the interface between the coating and the substrate，and the thickness of IDZ increased with time and gradually stabilized. A large number of topologically close�瞤acked phase were precipitated under the IDZ after thermal exposure for 50 h. Along with the thermal exposure time，the topologically close-packed phase was dissolved in the matrix.