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MER process

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Published: 30 September 2015
Fig. 9 Schematic of the MER composite anode process. Source: Ref 12 More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006078
EISBN: 978-1-62708-175-7
... Abstract This article provides a summary of the conventional technologies used for titanium powder production. It focuses on the various processes for titanium powder production, namely, Hunter, Kroll, Armstrong, MER, TIRO, FFC-Cambridge, Chinuka, and CSIR processes. Employment of titanium...
Image
Published: 30 September 2015
Fig. 10 Titanium deposits in (a) particulate, (b) flake, and (c) continuous form. Produced by various salt compositions and operating conditions of the MER process. Source: Ref 12 More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003006
EISBN: 978-1-62708-200-6
... of the polymer will be referred to as the mer unit throughout this article. Types of Polymers There are various possible classification schemes for polymers. Typical classification categories include polymerization process, chemical elements that make up the monomer, or crystalline versus noncrystalline...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9
... General steps and the roles of synthesis and analysis in the processes of design and failure analysis. Source: Ref 3 Polymer Structure A polymer structure contains many (poly-) repeats of some simpler chemical unit, called a mer. Another term often used in place of mer unit is monomer unit...
Image
Published: 30 September 2015
Fig. 5 Prealloyed randomly shaped powder particles of Ti-6Al-4V alloy composition. (a) As produced by the CSIRO process. Courtesy of CSIRO, Australia. (b) As produced by magnesium reduction of a mixture of TiCl 4 -ALCl 4 -VCl 4 in a continuous flow reactor. Courtesy of MER Corporation More
Image
Published: 30 September 2015
Fig. 7 Titanium powder samples obtained by electrolytic reduction methods for titanium extraction from its ores. (a) A sample of crystalline morphology of “electrowon” titanium particulates. Courtesy of MER Corporation. (b) Scanning electron micrograph image of unalloyed titanium powder More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003487
EISBN: 978-1-62708-195-5
... may play across a plas- automatic press. A hydraulic press for com- made by addition polymerization of mono- tic surface without rendering the surface con- pression molding or an injection machine that mers containing allyl groups; for example, ductive. operates continuously, being controlled me...
Book

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.9781627081955
EISBN: 978-1-62708-195-5
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005676
EISBN: 978-1-62708-198-6
... information on polymer chemistry, processing, and properties can be found in the Selected References section at the end of this article. Chemical Composition of the Polymer Backbone Polymers are comprised of long, chainlike molecules with repeat units of atoms known as mono mers (poly mer = many...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006095
EISBN: 978-1-62708-175-7
... in a continuous flow reactor. Courtesy of MER Corporation Fig. 6 The Armstrong process. (a) Production schematic of prealloyed (PA) randomly shaped powder particles of Ti-6Al-4V. (b) Micrograph. Courtesy of Cristal Metals, Inc. Fig. 7 Titanium powder samples obtained by electrolytic reduction...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006005
EISBN: 978-1-62708-172-6
... carbon and oxygen atoms in a carbon dioxide molecule Assembly of Polymers from Atoms Atoms—by virtue of their electron movement and transfer, sharing, or polar attraction—form mer units, which, in turn, may further react to form polymers (many mers, or molecules). All materials are comprised...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006915
EISBN: 978-1-62708-395-9
... properties by looking at a structure on paper is an active area of research ( Ref 11 ). Molecular Structure Polymer molecules are chains of repeat units called mers. The length of the chain (number of mers) affects the thermal, mechanical, and rheological properties of plastics, as shown in Table 3...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003711
EISBN: 978-1-62708-182-5
... of organic units (known as mers or monomers ) that are covalently linked. Plastics are processed polymers and are categorized by how they are formed. Thermoplastics have very long chains that, when heated, readily flow past one another. However, as the temperature is reduced, the thermal energy...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
...-type, and multiple-ram). It further discusses the technologies used in the design of dies, terminology, and materials selection for dies for the most common hot-forging processes, particularly those using vertical presses, hammers, and horizontal forging machines. A brief section is included...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.9781627081856
EISBN: 978-1-62708-185-6
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004031
EISBN: 978-1-62708-185-6
... bar. bloom. A semi nished hot rolled product, rec- 30 cm (8 to 12 in.) in diameter. tangular in cross section, produced on a bulging. The process of increasing the diameter bite. Advance of material normal to the plane of blooming mill. See also billet. For steel, the of a cylindrical shell (usually...
Book Chapter

By Rebecca Tuszynski
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003011
EISBN: 978-1-62708-200-6
... by chemical composition, morphology, and processing. Aspects of polymer structure that influence properties—structure within the mer, within the molecule, and between molecules—are discussed in the article “Polymer Science for Engineers” in this Volume. Whether a polymer has the properties...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005155
EISBN: 978-1-62708-186-3
.... Evaluation of a sheet-metal response during casting, pickling, annealing, or elec- circular shape. See also bending stress. to a bending operation, such as around a xed- troplating in a previously existing subsurface bending and forming. The processes of bend- radius tool. defect. ing, anging, folding...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006070
EISBN: 978-1-62708-172-6
... ). This slows the corrosion rate, because oxygen cannot diffuse through the gelatinous oxide layer to the cathodic reaction site, and the hydroxide reaction products cannot diffuse away. Thus, the cathodic reaction is said to be the rate-determining reaction in a neutral or near-neutral corrosion process...