Effect of Invar particle size on microstructures and properties of the Cu/Invar bi-metal matrix composites fabricated by SPS

Nie, Qiangqiang; Chen, Guohong; Wang, Bing; Yang, Lei; Zhang, Jianhua; Tang, Wenming

doi:10.1016/j.jallcom.2021.162055

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…It is known that the inflexion point of Δl = f(T) of Invar corresponds to its Curie temperature [ 13 , 28 ]. The Invar’s Curie temperature is 528 K (255 °C) [ 29 ].…”

Section: Resultsmentioning

confidence: 99%

Invar/WC Composite Compacts Obtained by Spark Plasma Sintering from Mechanically Alloyed Powders

et al. 2022

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The composite materials are used on an increasingly large scale in top fields, such as the automotive, aerospace, and nuclear industries, due to the combination of the specific properties of the composite components. Invar/WC nanocrystalline composite compacts were successfully obtained by spark plasma sintering from mechanical milled composite powder. The influence of the amount of tungsten carbide (WC) on sintering, coefficient of thermal expansion (CTE), and hardness has been investigated. The relative density and hardness of Invar/WC composite compacts increases with increasing the WC content up to 10 vol.%. At higher amount of WC (15% vol.), the relative density and hardness of the Invar/WC composite compacts decreases. The temperature up to which CTE remains at a low value (0.6–1) × 10−6 °C−1 is influenced by the WC content and decreases with the WC amount of increase.

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“…It is known that the inflexion point of Δl = f(T) of Invar corresponds to its Curie temperature [ 13 , 28 ]. The Invar’s Curie temperature is 528 K (255 °C) [ 29 ].…”

Section: Resultsmentioning

confidence: 99%

Invar/WC Composite Compacts Obtained by Spark Plasma Sintering from Mechanically Alloyed Powders

et al. 2022

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“…The scale contains 30 items that describe the primary manifestations of depression in the older adults, and each item is a short sentence to which the subject responds with either “yes” or “no.” The primary statistical indicator of the GDS is the total score, which reflects the degree of depressive symptoms. A score of ≥11 points indicates depressive symptoms, with 11 to 20 points considered mild depression and 21 to 30 points indicating moderate-to-severe depression (Nie et al, 2022; Xinou et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

“…The primary statistical indicator of the GDS is the total score, which reflects the degree of depressive symptoms. A score of ≥11 points indicates depressive symptoms, with 11 to 20 points considered mild depression and 21 to 30 points indicating moderate-to-severe depression (Nie et al, 2022;Xinou et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

Mitigating Lower Urinary Tract Symptoms Secondary to Benign Prostatic Hyperplasia: Ameliorating Sexual Function and Psychological Well-Being in Older Men

Chan,

Estivalet

et al. 2023

Am J Mens Health

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This study aimed to investigate the prevalence of lower urinary tract symptoms (LUTS) in older men ( N= 3056) with benign prostatic hyperplasia (BPH) and its effects on their sexual function and mental health. Descriptive, correlation, and regression analyses were used to explore the relationships between prostate and lower urinary tract health and psychological well-being. Better prostate and lower urinary tract health positively affected psychological well-being, and sexual function also had a positive influence. LUTS have an adverse impact on sexual function and mental health. Early intervention is crucial for mitigating the negative impact of LUTS on the quality of life in older men. Addressing prostate and lower urinary tract health issues through appropriate interventions may improve psychological well-being. Health care professionals must consider the adverse effects of BPH and LUTS on sexual function and mental health, and implement interventions to enhance the overall quality of life in older men.

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“…Due to the high temperatures and pressures that can be attained during SPS (of the order of some thousands • C and some hundreds MPa, respectively, depending also on the composition of the tooling), a wide variety of materials in form of powder can be consolidated: ceramics, metals, composites and polymers [6][7][8][9][10][11]. One of the main advantages of the SPS process is the use of high heating and cooling rates (of the order of several hundred • C•min −1 ), shortening the sintering time and limiting the grain growth [2][3][4]12,13].…”

Section: Introductionmentioning

confidence: 99%

Development of Ti PVD Films to Limit the Carburization of Metal Powders during SPS Process

Ardigo-Besnard

Besnard

Moser

et al. 2021

Solids

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Spark plasma sintering technique is used for the fabrication of dense materials with a fine-grained microstructure. In this process, a powder is placed into a graphite mold and a uniaxial pressure is applied by two graphite punches. A graphite foil is inserted between the punches and the powder and between the mold and the powder to ensure good electrical, physical and thermal contact. One of the major drawbacks during sintering of metal powders is the carburization of the powder in contact with the graphite foils. In this study, a PVD coating of titanium was applied on the graphite foils in contact with the metal powder (pure iron). The results are promising, as the investigations show that the application of a Ti PVD film of 1.5 and 1.1 µm thickness is effective to completely avoid the carburization of iron powder. Carbon diffuses inside the PVD film during sintering. In parallel, iron diffusion was revealed inside the Ti coating of 1.5 µm thickness. On the other hand, a Ti PVD film of 0.5 µm thickness provides a protection against carbon diffusion just on the sides in contact with the mold, proving that the coating thickness represents an important parameter to consider.

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Effect of Invar particle size on microstructures and properties of the Cu/Invar bi-metal matrix composites fabricated by SPS

Cited by 8 publications

References 27 publications

Invar/WC Composite Compacts Obtained by Spark Plasma Sintering from Mechanically Alloyed Powders

Invar/WC Composite Compacts Obtained by Spark Plasma Sintering from Mechanically Alloyed Powders

Mitigating Lower Urinary Tract Symptoms Secondary to Benign Prostatic Hyperplasia: Ameliorating Sexual Function and Psychological Well-Being in Older Men

Development of Ti PVD Films to Limit the Carburization of Metal Powders during SPS Process

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