Electroless nickel-phosphorus coating on Ti and Al elemental powders
About: This article is published in Scripta Materialia.The article was published on 2001-07-31. It has received 32 citations till now. The article focuses on the topics: Electroless nickel & Metal powder.
Citations
More filters
TL;DR: In this paper, Al/Fe core-shell particles were successfully synthesized by electroless deposition of iron on aluminium particles and the process variables were investigated and optimised to ach...
Abstract: In the present study, Al/Fe core–shell particles were successfully synthesised by electroless deposition of iron on aluminium particles. The process variables were investigated and optimised to ach...
4 citations
01 Jan 2020
Abstract: One of the most important factors in powder metallurgy is the powder properties that directly affect the final product properties. By using the functionally graded materials (FGMs) in powder metallurgy, the desired properties can be obtained by means of layers having microstructure having more than one feature in a single material structure. Similarly, by the production of functionally graded powders (FGPs), different properties can be obtained in a single powder structure and the materials that have different properties in the same structure are developed by integrating these powders with powder metallurgy. In this context, the FGMs synthesized from the FGPs produced by electroless deposition (ED) of metal or ceramic-based powder materials facilitates the production of advanced material. Therefore, the purpose of this chapter is on the fabrication of metal and ceramic-based FGPs by ED and to discuss of their advantages on the powder metallurgy parts.
2 citations
01 Jan 2006
2 citations
31 Dec 2020
2 citations
01 Sep 2017
TL;DR: In this article, the effect of physical vapor deposition (PVD) process conditions on the concentration of titanium, aluminum and copper ions in the metallic plasma flow was studied and the relationship allowing determination of time, required to attain the preset temperature on the powder particle surface and to produce a metallic film of the required thickness.
Abstract: Technique and equipment of physical vapor deposition (PVD) thin films on ceramic powders for thermal spraying technologies are developed. Alumina powders coated metal thin films were used for plasma spraying. Deposition of two-layer films on the powder particles was carried out. The first layer was titanium and the second layer was aluminum or copper. The titanium as adhesively-active element capable of wet alumina is necessary for increase the adhesion strength vacuum films. Effect of PVD process conditions on the concentration of titanium, aluminum and copper ions in the metallic plasma flow was studied. Suggested are the relationships allowing determination of time, required to attain the preset temperature on the powder particle surface and to produce a metallic film of the required thickness.
Cites background or methods from "Electroless nickel-phosphorus coati..."
...So, the magnetron sputtering technique was used for the deposit Ti films on the particles of glass powder with 2 – 70 m fraction [14]....
[...]
...A limited number of methods are available for this purpose as electrolytic plating, and chemical vapor deposition (CVD) [14]....
[...]
References
More filters
01 Jan 1985
TL;DR: In this article, the authors describe the behavior of grain boundaries in a two-dimensional model ordered alloy and the effects of elastic anisotropy on the anomalious yield behavior of cubic ordered alloys.
Abstract: This book contains over 50 selections. Some of the titles are: Order-disorder behavior of grain boundaries in a two-dimensional model ordered alloy; Dislocation reactions at grain boundaries in Ll/sub 2/ ordered alloys; Creep cavitation in a nickel aluminide; Effects of elastic anisotropy on the anomalious yield behavior of cubic ordered alloys; and Processing technology for nickel aluminides.
2,123 citations
Book•
30 Jun 1985TL;DR: The electron microscopy with light and electrons (EM) family as discussed by the authors is a family of microscopy techniques that use electron microscopes for high-vacuity measurements. But the electron microscope family is not suitable for the analysis of high-voltage measurements.
Abstract: 1. Microscopy with light and electrons 2. The electron microscope family 3. Rudiments of specimen preparation and interpretation of micrographs 4. Specialised techniques in electron microscopy 5. Examples of the use of electron microscopy Appendix 1: Production and measurement of high vacua Appendix 2: Vacuum deposition of thin metallic and carbon films for electron microscopy Appendix 3: X-ray generation and analysis Appendix 4: Electron sources for electron microscopes.
170 citations
TL;DR: In this paper, the effects of Cr additions to y-base alloys have been investigated, using bulk materials consolidated from rapid solidification-processed ribbons, and it was concluded that the ductilization effect of Cr in duplex alloys is partially due to the tendency of Cr to occupy Al lattice sites.
Abstract: The effects of Cr additions to y-base alloys have been investigated, using bulk materials consolidated from rapid solidification-processed ribbons. The composition ranges studied were 0 to 4 at. pet Cr and 44 to 54 at. pet Al. It was found that Cr additions do not affect the deformation behavior of single-phase γ alloys. However, they significantly enhance the plasticity of Al-lean duplex alloys which contain grains of single-phase γ and grains of lamellar γ/α2. Other Cr effects on microstructure, phase stability, site occupancy, and deformation sub-structures were characterized and correlated to the observed mechanical behavior. It was concluded that the ductilization effect of Cr in duplex alloys is partially due to the tendency of Cr to occupy Al lattice sites. Ductilization is also partially due to the ability of Cr to modify the Al partitioning and, therefore, the thermal stability of transformed α2 laths.
158 citations
TL;DR: In this article, the ternary alloys of arc-melted, nearequiatomic TiAl alloys containing boron additions are analyzed and compared with those of binary Ti-Al and Ti-B alloys processed in a similar fashion.
Abstract: Solidification microstructures of arc-melted, near-equiatomic TiAl alloys containing boron additions are analyzed and compared with those of binary Ti-Al and Ti-B alloys processed in a similar fashion. With the exception of the boride phase, the matrix of the ternary alloy consists of the same α2 (DO19) and γ (Ll0) intermetallic phases found in the binary Ti-50 at. pct Al alloy. On the other hand, the boride phase, which is TiB (B27) in the binary Ti-B alloys, changes to TiB2 (C32) with the addition of Al. The solidification path of the ternary alloys starts with the formation of primary α (A3) for an alloy lean in boron (∼1 at. pct) and with primary TiB2 for a higher boron concentration (∼5 at. pct). In both cases, the system follows the liquidus surface down to a monovariant line, where both α and TiB2 are solidified concurrently. In the final stage, the α phase gives way to γ, presumably by a peritectic-type reaction similar to the one in the binary Ti-Al system. Upon cooling, the α dendrites order to α2 and later decompose to a lath structure consisting of alternating layers of γ and α2.
109 citations