scholarly journals Novel Ta46.5W35Co18.5 thin film metallic glass with excellent corrosion resistance, high hardness and good thermal stability

2022 ◽  
Vol 890 ◽  
pp. 161874
Author(s):  
Xiao Liu ◽  
Jing Zhou ◽  
Jianguo Wang ◽  
Chuntao Chang ◽  
Zhenzhong Sun ◽  
...  
Keyword(s):  
Thin Film ◽  
Thermal Stability ◽  
Corrosion Resistance ◽  
Metallic Glass ◽  
High Hardness ◽  
Good Thermal Stability ◽  
Excellent Corrosion Resistance

scholarly journals Improved Mechanical Properties and Corrosion Resistance of Mg-Based Bulk Metallic Glass Composite by Coating with Zr-Based Metallic Glass Thin Film

Coatings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1212
Author(s):  
Pei-Hua Tsai ◽  
Chung-I Lee ◽  
Sin-Mao Song ◽  
Yu-Chin Liao ◽  
Tsung-Hsiung Li ◽  
...  
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Substrate Surface ◽  
Bending Test ◽  
Corrosion Behaviors ◽  
Lightweight Structure ◽  
Mechanical Properties And Corrosion

Mg-based bulk metallic glass (BMG) and its composite (BMGC) can be excellent candidates as lightweight structure materials, but lack of anti-corrosion ability may restrict their application. In order to enhance the natural weak point of Mg-based BMGC, a 200-nm thick Zr-based metallic glass thin film (MGTF) ((Zr53Cu30Ni9Al8)99.5Si0.5) was applied and its mechanical properties as well as its corrosion resistance were appraised. The results of a 3-point bending test revealed that the flexural strength of the Mg-based BMGC with 200-nm thick Zr-based MGTF coating can be greatly enhanced from 180 to 254 MPa. We propose that the Zr-based MGTF coating can help to cover any small defects of a substrate surface, provide a protecting layer to prevent stress concentration, and cease crack initiation from the specimen surface during bending tests. Moreover, the results of anti-corrosion behavior analysis revealed a similar trend between the Mg-based BMG, Mg-based BMGC, and Mg-based BMGC with Zr-based MGTF coating in 0.9 wt.% sodium chloride solution. The readings show a positive effect with the Zr-based MGTF coating. Therefore, the 200-nm thick Zr-based MGTF coating is a promising solution to provide protection for both mechanical and anti-corrosion behaviors of Mg-based BMGC and reinforce its capability as structure material in island environments.

scholarly journals Formation and Properties of Amorphous Multi-Component (CrFeMoNbZr)Ox Thin Films

Metals ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 599
Author(s):  
Xiaoyu Gu ◽  
Hengwei Luan ◽  
Xinglong Yang ◽  
Xinchao Wang ◽  
Kaixuan Fang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Corrosion Resistance ◽  
High Hardness ◽  
Oxide Phase ◽  
Dual Phase ◽  
Coating Materials ◽  
Amorphous Thin Film ◽  
Amorphous Structures ◽  
Superior Corrosion Resistance

In this work, a new multi-component (CrFeMoNbZr)Ox system was developed. The thin films presented dual-phase amorphous structures, comprising a dominant amorphous alloy phase and a small amount of an amorphous oxide phase. The thin films showed higher hardness and better corrosion resistance than a commercial Zr-based alloy. The combined properties of high hardness and superior corrosion-resistance make the amorphous thin film a candidate for coating materials on commercial Zr-based alloys for engineering applications.

On the Mechanical Reliability of Photo-BCB-Based Thin Film Dielectric Polymer for Electronic Packaging Applications

1999 ◽  
Vol 122 (1) ◽  
pp. 28-33 ◽  
Author(s):  
Jang-hi Im ◽  
Edward O. Shaffer ◽  
Theodore Stokich, ◽  
Andrew Strandjord ◽  
Jack Hetzner ◽  
...  
Keyword(s):  
Thin Film ◽  
Thermal Stability ◽  
Photoelectron Spectroscopy ◽  
Moisture Absorption ◽  
Mechanical Performance ◽  
Adhesion Promoter ◽  
Helium Atmosphere ◽  
Thermally Induced ◽  
Good Thermal Stability ◽  
Substrate Surfaces

This work examines the mechanical performance of thin film coatings from Photosensitive-benzocyclobutene (Photo-BCB) formulations (Cyclotene2 4024, 4026 and 7200), on various substrate surfaces such as Al, Cu, Si, and SiN. The adhesion promoter used was designated AP-3000 and was based on vinyltriacetoxysilane (VTAS), which had been properly hydrolyzed and advanced. Measurement of the interfacial adhesion was performed primarily using the modified Edge Liftoff Test m-ELT. It was found that, by applying the newly developed adhesion promoter, AP-3000, the interfacial energy of Photo-BCB to Al, Cu, Si, and SiN was significantly improved, often approaching the toughness of Photo-BCB, ca. 45 J/m2. The x-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) analyses of the delaminated surfaces of the Photo-BCB/Al structure revealed distinct differences in surface roughness and the chemical composition depending on whether or not adhesion promoter was used. Other parameters important for long term stability (e.g., moisture uptake and thermal stability) of Photo-BCB were also measured. The equilibrium moisture content at 84 percent RH in ambient temperature was low, 0.14 wt percent and the thermally induced weight loss at 330°C in helium atmosphere was less than 1 percent/h. The low moisture absorption and good thermal stability, together with the given mechanical toughness and adhesion, allow the Photo-BCB to be widely usable for various microelectronic packaging applications, for up to 40 μm thick build in the case of silicon substrate. [S1043-7398(00)00701-5]

The Effect of Erbium on the Properties and Microstructure of Al Alloys

2012 ◽  
Vol 706-709 ◽  
pp. 329-334 ◽  
Author(s):  
Zuo Ren Nie ◽  
Hui Huang ◽  
Kun Yuan Gao ◽  
Bo Long Li ◽  
Wei Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Tensile Strength ◽  
Corrosion Resistance ◽  
Pure Aluminum ◽  
Fatigue Property ◽  
Al Alloys ◽  
Small Addition ◽  
Excellent Corrosion Resistance ◽  
Thermal Stability Of ◽  
Strength And Ductility

Mechanical properties, corrosion resistance, and microstructure of Al alloys with trace element erbium were studied. Systemic studies in the pure aluminum and 5xxx series Al alloys showed that the tensile strength was significantly improved by above 20% with little loss of elongation by Er alloying. The 5xxx series Al alloys with erbium also exhibited excellent corrosion resistance. Erbium improved the aging hardness response of 7xxx series Al alloys and the addition of 0.4%Er to Al-Zn-Mg alloys increases the hardness by 35MPa. In all experiment Al alloys, a small addition of 0.1wt% Er induced a quick increase of the tensile strength and the amount of 0.4%Er shows optimized balance of the strength and ductility. The Er addition improved the thermal stability, with increasing the starting Rex temperature about 50°C in all investigated Al alloys. With regard to the microstructure mechanisms, in all experimental Al alloys Er addition has significantly refined the microstructure, which mainly attributed to presence the Al3Er particles. In the 7xxx series Al alloys, no observable PFZ after addition of 0.4% Er was found. The fatigue property, the fracture toughness and the thermal stability of microstructure and properties are on the way.

Effect of compressive deformation on thermal and corrosive properties of Zr61.7Al8Ni13Cu17Sn0.3 bulk metallic glass

2018 ◽  
Vol 32 (07) ◽  
pp. 1850077
Author(s):  
Yuanli Xu ◽  
Bo Shi
Keyword(s):  
Thermal Stability ◽  
Free Energy ◽  
Corrosion Resistance ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Corrosion Current Density ◽  
Corrosion Current ◽  
Compressive Deformation ◽  
Cast Sample ◽  
Corrosive Property

The effect of compressive deformation on thermal stability and corrosive property of Zr[Formula: see text]Al8Ni[Formula: see text]Cu[Formula: see text]Sn[Formula: see text] bulk metallic glass with a strain of 80% was investigated in this work. The corresponding thermal stability is found to decrease after deformation and this can probably be attributed to the reduction of the viscosity and the increase of the Gibbs free energy after compressive deformation. In addition, the corrosion current density increases and this suggests that the corrosion resistance decreases for the deformed sample in comparison with the as-cast sample.

Effect of RE Elements Addition on Corrosion Behavior of Mg-Zn-Ca Amorphous Alloys for Biomedical Applications

2021 ◽  
Vol 1035 ◽  
pp. 501-510
Author(s):  
Yu Chen Chi ◽  
Bao Ru Guan ◽  
Feng Chen ◽  
Feng Xinag Qin
Keyword(s):  
Thermal Stability ◽  
Corrosion Resistance ◽  
Rare Earth ◽  
Oxide Layer ◽  
Corrosion Behavior ◽  
Amorphous Alloys ◽  
Biomedical Applications ◽  
Good Thermal Stability ◽  
Re Elements

The effects of rare earth (RE) elements (La, Y) addition on thermal stability and corrosion behavior of Mg68Zn28Ca4 amorphous alloys were investigated in this paper. The investigated Mg-Zn-Ca-RE amorphous alloys exhibit good thermal stability and enhanced corrosion resistance. The enhanced corrosion resistance of the RE-containing amorphous alloys is owing to the enrichment of the Zn and RE elements in the oxide layer. The corrosion resistance is further improved with the increasing of RE content.

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