scholarly journals Influence of Lubricants and Attrition Milling Parameters on the Quality of Zirconolite Ceramics, Consolidated by Hot Isostatic Pressing, for Immobilization of Plutonium

2014 ◽  
Vol 12 (S2) ◽  
Author(s):  
Jonathan Squire ◽  
Ewan R. Maddrell ◽  
Neil C. Hyatt ◽  
Martin C. Stennett
Keyword(s):  
Hot Isostatic Pressing ◽  
Isostatic Pressing ◽  
Milling Parameters ◽  
Attrition Milling

scholarly journals Examination of milled h-BN addition on sintered Si3N4/h-BN ceramic composites

2018 ◽  
Vol 12 (4) ◽  
pp. 357-365 ◽  
Author(s):  
Katalin Balázsi ◽  
Mónika Furko ◽  
Zsolt Fogarassy ◽  
Csaba Balázsi
Keyword(s):  
Milling Time ◽  
Hexagonal Boron Nitride ◽  
Hot Isostatic Pressing ◽  
Ceramic Matrix ◽  
Ceramic Composites ◽  
Milling Parameters ◽  
Attrition Milling ◽  
Transmission Electron ◽  
Hardness Values ◽  
Si3n4 Ceramics

Silicon nitride (Si3N4) ceramics containing 1 and 5 wt.% of hexagonal boron nitride (h-BN) were prepared by attrition milling and hot-isostatic pressing. Thorough morphological characterizations have been carried out to reveal the influence of the milling parameters on the size of the h-BN additives. The results confirmed significant decrease in h-BN particle size by increasing milling time. The transmission electron microscopy observations revealed that the h-BN particles were incorporated into the ceramic matrix. The results showed that the increase of the h-BN content decreased significantly the hardness of materials. Moreover, the hardness values were higher when the size of h-BN was larger. The same tendency was observed in the case of Young?s modulus.

Effect of hot isostatic pressing method to enhance quality of tin powder

2020 ◽  
Author(s):  
Abdul Basyir ◽  
Agus Sukarto Wismogroho ◽  
Didik Aryanto ◽  
Wahyu Bambang Widayatno
Keyword(s):  
Hot Isostatic Pressing ◽  
Pressing Method ◽  
Isostatic Pressing

scholarly journals Operations for the preparation of metal powders for hot isostatic pressing

2021 ◽  
Vol 2131 (5) ◽  
pp. 052029
Author(s):  
S Manyanin ◽  
U Vaxidov ◽  
K Maslov
Keyword(s):  
Powder Metallurgy ◽  
Hot Isostatic Pressing ◽  
Third Party ◽  
Metal Powders ◽  
Isostatic Pressing ◽  
Consumption Coefficient ◽  
Machine Parts ◽  
Technological Methods ◽  
Required Quality

Abstract Powder metallurgy as a method of manufacturing and processing metals is very diverse in its technological methods. This makes it possible to obtain parts of the required quality and necessary properties. Using the methods of powder metallurgy production, specialists can produce the latest composite materials, the production of which is impossible by traditional methods. The production of machine parts and mechanisms from metal powders provides significant savings on material, due to the low consumption coefficient. Metal powders are usually manufactured in specialized factories, but sometimes they are produced directly by the consumer; in this case, the manufacturing process is built in direct accordance with the requirements of this consumer. If the powder comes from a third-party supplier, there is a need for special preparation operations, before starting production, to give the powder certain chemical and physical characteristics. Hot isostatic pressing technology is a complex technological process in which a large number of parameters affect the quality of the final product. The complexity of the GIP process lies in various thermal, physical, and mechanical interactions. In this regard, a large role is played by the processes for preparing the powder for the GIP. The article describes the main operations for the preparation of powder for hot isostatic pressing.

Effect of Tooling Material on the Internal Surface Quality of Ti6Al4V Parts Fabricated by Hot Isostatic Pressing

2016 ◽  
Vol 48 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Chao Cai ◽  
Bo Song ◽  
Qingsong Wei ◽  
Wu Yan ◽  
Pengju Xue ◽  
...  
Keyword(s):  
Surface Quality ◽  
Hot Isostatic Pressing ◽  
Internal Surface ◽  
Isostatic Pressing

Using hot isostatic pressing for increasing the quality of welded joints

1993 ◽  
Vol 7 (4) ◽  
pp. 301-304
Author(s):  
S I Kruk ◽  
V M Shagalevich ◽  
V Yu Gorokhov ◽  
V I Lukin
Keyword(s):  
Welded Joints ◽  
Hot Isostatic Pressing ◽  
Isostatic Pressing

scholarly journals The effect of pre-treatment parameters on the quality of glass-ceramic wasteforms for plutonium immobilisation, consolidated by hot isostatic pressing

2017 ◽  
Vol 485 ◽  
pp. 253-261 ◽  
Author(s):  
Stephanie M. Thornber ◽  
Paul G. Heath ◽  
Gabriel P. Da Costa ◽  
Martin C. Stennett ◽  
Neil C. Hyatt
Keyword(s):  
Glass Ceramic ◽  
Hot Isostatic Pressing ◽  
Isostatic Pressing ◽  
Pre Treatment

The Effects of Hot Isostatic Pressing on Aluminium Castings

2007 ◽  
Vol 345-346 ◽  
pp. 1545-1548
Author(s):  
Markus Ostermeier ◽  
Hartmut Hoffmann ◽  
Ewald Werner
Keyword(s):  
Tensile Strength ◽  
Tensile Testing ◽  
Hot Isostatic Pressing ◽  
Casting Process ◽  
Initial State ◽  
Isostatic Pressing ◽  
Heat Treated ◽  
Initial Heat ◽  
Initial Heat Treatment

Since the early 1960s hot isostatic pressing (HIP) was used to improve the quality of castings made of various alloys. The closure of pores, originating from the casting process, is considered as the main source of these improvements. For the aluminium alloy Al-9Si-3Cu specimens for tensile testing were machined from castings either squeeze casted and heat treated to T4 and T6 conditions or investment casted. The effect of HIP on density, roughness and mechanical properties was investigated. The density and roughness of the squeeze casted specimens did not change remarkably and their tensile strength became worse, because the initial heat-treatment-state was destroyed by HIP. The investment casted specimens became denser and roughness became worse due to closure of pores near the surface. Although roughness after HIP was higher than in the initial state, tensile strength was improved significantly by HIP, because of closure of the pores in the specimen.

scholarly journals Hot Isostatic Pressing Improves the Quality of the Blades from Nickel Base Superalloys for Turbine Engines

2011 ◽  
Vol 278 ◽  
pp. 295-300 ◽  
Author(s):  
Igor M. Razumovskii ◽  
Albert A. Tikhonov ◽  
S.F. Marinin ◽  
A.V. Logunov ◽  
A.G. Beresnev
Keyword(s):  
Hot Isostatic Pressing ◽  
Turbine Engines ◽  
Cast State ◽  
Isostatic Pressing ◽  
Service Characteristics ◽  
Complete Restoration ◽  
Polycrystalline Alloy ◽  
Nickel Base ◽  
Long Operation

Typical defects of the cast engine blades from Ni base superalloys in the as-cast state and after long operation were investigated: the cast porosity, internal and external microcracs. The initial cast porosity and voids, which have appeared during long operation, reduce the fatigue and other service characteristics of the blades from Ni base superalloys. Hot isostatic pressing (HIP) reduces the size and number of micropores in the cast blades from Ni base superalloys with a polycrystalline (alloy GS6U) and single crystal (alloy GS32) structures. As a result, HIP improves the mechanical properties of the blades. Application of the HIP, together with the standard heat treatment in the renovation of the blades after long operation can provide a virtually complete restoration of their structure and efficiency.

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