Searched for: subject:"sintering"
(1 - 20 of 21)

Pages

document
Zhang, B. (author)
Power electronics demand miniaturization, integration, higher electrical and ther-mal conductivities. However, the traditional electronic packaging materials and technology have limitations to meet these requirements. Conventional lead-free die attach materials, like Sn-Ag-Cu solders, can not satisfy high power electronics application, due to...
doctoral thesis 2020
document
Fu, J. (author), Brouwer, J.C. (author), Richardson, I.M. (author), Hermans, M.J.M. (author)
Oxide dispersion strengthened (ODS) steels are considered to be one of the candidate structural materials for advanced nuclear applications due to their high elevated-temperature strength, corrosion resistance, and radiation tolerance. Joining of ODS steels by traditional fusion joining techniques is not applicable, because the melting...
conference paper 2020
document
Gavel, D.J. (author), Adema, Allert (author), van der Stel, Jan (author), Peeters, Tim (author), Sietsma, J. (author), Boom, R. (author), Yang, Y. (author)
Physicochemical behaviour of the pellets, sinters and its mixture (60% pellets: 40% sinter) is investigated by a series of smelting and quenching experiments. For all ferrous raw-material beds, three distinct stages of bed shrinkage occur due to indirect reduction, softening and melting. However, the characteristic nature (displacement,...
journal article 2020
document
Gavel, D.J. (author), Adema, A.T. (author), van der Stel, Jan (author), Sietsma, J. (author), Boom, R. (author), Yang, Y. (author)
Effect of nut coke addition with ferrous burden (pellet and sinter mixture) is experimentally investigated under simulated blast furnace conditions. Nut coke mixing degree was varied (0, 20 and 40 wt-%) as a replacement of the regular coke. During smelting, the ferrous bed evolves through three distinct stages of shrinkage due to indirect...
journal article 2020
document
Dong, J. (author), Li, Y. (author), Lin, P. (author), Leeflang, M.A. (author), van Asperen, S. (author), Yu, K. (author), Tümer, N. (author), Norder, B. (author), Zadpoor, A.A. (author), Zhou, J. (author)
Biodegradable porous magnesium (Mg) scaffolds are promising for application in the regeneration of critical-sized bone defects. Although additive manufacturing (AM) carries the promise of offering unique opportunities to fabricate porous Mg scaffolds, current attempts to apply the AM approach to fabricating Mg scaffolds have encountered some...
journal article 2020
document
Hu, D. (author), Cui, Z. (author), Fan, J. (author), Fan, X. (author), Zhang, Kouchi (author)
A molecular dynamics (MD) simulation was performed on the coalescence kinetics and mechanical behavior of the pressure-assisted Cu nanoparticles (NPs) sintering at low temperature. To investigate the effects of sintering pressure and temperature on the coalescence of the nanoparticles, sintering simulations of two halve Cu NPs were conducted at...
journal article 2020
document
Zhang, H. (author)
High power electronics with wide band gap semiconductors are becoming the most promising devices in new energy power suppliers and converters. Highly reliable die attach materials, serving as one of interconnections, play critical roles in power electronic packages and modules. Among which, the nanosilver paste/film has become a promising die...
doctoral thesis 2019
document
Zhang, H. (author), Liu, Y. (author), Wang, Lingen (author), Sun, Fenglian (author), Fan, Xuejun (author), Zhang, Kouchi (author)
The nanoindentation test was conducted in this paper to investigate the indentation hardness, plasticity and initial creep properties of pressure sintered nanosilver joint at various test temperatures. The effects of strain rate on the indentation hardness were first investigated. Then yield stress of nanosilver sintered joint was studied in...
journal article 2019
document
Fu, J. (author), Brouwer, J.C. (author), Richardson, I.M. (author), Hermans, M.J.M. (author)
Oxide dispersion strengthened (ODS)Eurofer steel was prepared via mechanical alloying (MA)and spark plasma sintering (SPS). Different combinations of MA and SPS parameters were adopted in order to optimise the fabrication process. The experimental results show that the sample milled for 30 h, sintered at 1373 K at a pressure of 60 MPa has...
journal article 2019
document
Zhang, H. (author), Liu, Y. (author), Wang, Lingen (author), Sun, Fenglian (author), Fan, Jiajie (author), Placette, Mark D. (author), Fan, Xuejun (author), Zhang, Kouchi (author)
Modern power electronics has the increased demands in current density and high-temperature reliability. However, these performance factors are limited due to the die attach materials used to affix power dies microchips to electric circuitry. Although several die attach materials and methods exist, nanosilver sintering technology has received...
journal article 2019
document
Liu, Y. (author), Zhang, H. (author), Wang, Lingen (author), Fan, Xuejun (author), Zhang, Kouchi (author), Sun, Fenglian (author)
Purpose: Crack and stress distribution on dies are key issues for the pressure-assisted sintering bonding of power modules. The purpose of this research is to build a relationship among stress distributions, sintering sequences and sintering pressures during the sintering processes. Design/methodology/approach: Three sintering sequences, S(a)...
journal article 2019
document
Kiani Khouzani, M. (author), Bahrami, A. (author), Yazdan Mehr, M. (author)
This paper aims at studying microstructure and mechanical properties of spark plasma sintered (SPSed) Stellite®-6 cobalt-based superalloy. SPS is a sintering technique, based on a relatively fast resistance heating using a pulsed current. Fast sintering process, associated with minimum grain growth, results in excellent mechanical properties....
journal article 2019
document
Boatemaa, L. (author)
Alumina (Al2O3) is an attractive ceramic for engineering applications operating at elevated or high temperatures because of its good thermal and chemical resistance. It also maintains high strength and hardness at high temperatures. These desirable properties are due to the strong covalent and ionic bonds existing between its atoms.<br/>However,...
doctoral thesis 2018
document
Liu, Yang (author), Zhang, H. (author), Wang, Lingen (author), Fan, Xuejun (author), Zhang, Kouchi (author), Sun, Fenglian (author)
The microstructure, thickness, porosity, and shear performance of the silver (Ag) sintering layers under different sintering pressures were investigated. Experimental results demonstrated that the thickness and the porosity of the sintering layer decreased when the sintering pressure varied from 5 MPa to 30 MPa. This densification phenomenon...
journal article 2018
document
Gavel, D.J. (author), Song, Qingshi (author), Adema, A.T. (author), van der Stel, Jan (author), Sietsma, J. (author), Boom, R. (author), Yang, Y. (author)
In the blast furnace, nut coke is utilized in a mixture with the ferrous burden to improve the gas permeability. Although applied in a broad range (10–40 mm, 2–23 wt-%), limited information is available on changed burden behaviour in its presence. In the present study, the detailed characterization was performed on the iron ore pellets quenched...
journal article 2018
document
Zhang, H. (author), Liu, Yang (author), Wang, Lingen (author), Fan, Jiajie (author), Fan, Xuejun (author), Sun, Fenglian (author), Zhang, Kouchi (author)
High reliable packaging materials are needed for electronics when they work at harsh environments. Among which, the nanosilver material has been widely studied and applied in power electronics due to its low processing temperature and high reliability. This paper investigates the bonding properties of nanosilver sintered hermetic cavity. There...
journal article 2018
document
Xie, Jingxiu (author), Torres Galvis, Hirsa M. (author), Koeken, Ard C J (author), Kirilin, Alexey (author), Dugulan, A.I. (author), Ruitenbeek, Matthijs (author), de Jong, Krijn P. (author)
The Fischer−Tropsch Synthesis converts synthesis gas from alternative carbon resources, including natural gas, coal, and biomass, to hydrocarbons used as fuels or chemicals. In particular, iron-based catalysts at elevated temperatures favor the selective production of C2−C4 olefins, which are important building blocks for the chemical industry....
journal article 2016
document
Zhang, B. (author), Carisey, Y.C.P. (author), Damian, A. (author), Poelma, R.H. (author), Zhang, G.Q. (author), van Zeijl, H.W. (author)
We explore a methodology for patterned copper nanoparticle paste for 3D interconnect applications in wafer to wafer (W2W) bonding. A novel fine pitch thermal compression bonding process (sintering) with coated copper nanoparticle paste was developed. Most of the particle size is between 10-30 nm. Lithographically defined stencil printing using...
conference paper 2016
document
Eijt, S.W.H. (author), Mijnarends, P.E. (author), Van Schaarenburg, L.C. (author), Houtepen, A.J. (author), Vanmaekelbergh, D. (author), Barbiellini, B. (author), Bansil, A. (author)
The effect of temperature controlled annealing on the confined valence electron states in CdSe nanocrystal arrays, deposited as thin films, was studied using two-dimensional angular correlation of annihilation radiation. A reduction in the intensity by ?35% was observed in a feature of the positron annihilation spectrum upon removal of the...
journal article 2009
document
Chen, L. (author), Schoonman, J. (author)
journal article 1993
Searched for: subject:"sintering"
(1 - 20 of 21)

Pages