The hard surfacing of wear-resistant metal surfaces.(in Dutch)

Hard Coatings and Surfaces for Metals. Robert J. Fabian. Materials C ,Wethads, v. 4.5, Jan. 1957. I_‘. rlr-140. Survey of the major t\-pcs of bard coatings ant1 surfaces. What metals can be treated; hardness and thickness; wear and corrosion propcrtics; chief advantages and limitations. cber die bleibende Hlrte galvanischer Si~berniede~ch~~ge. Hardness of Silver Electrodeposits. J. Fischer. %&Zl, Y. II, June X9.57, p. 485-4Q0. Study of the factors which increase or decrease the hardness of -\g plate. Zur Frage der Glanzeloxierung des Aluminiums. :\nodic Treatment of Aluminum. ‘1’\‘.Helling and H. Neunzig. Metdl, v. I r, June ,957, p. 490-49s. AIteration of :X1 surface by chemical and anodic poIishing as well as by mechanical methods. Developments in Sprayed Metal Coatings. Herbert S. Ingham. ~~~etuZ~o~ki~2~ Prod&ion, \‘. IOO, Sept. 21, 1956, p. 152r-1525. Ad\*ances in the design of powder spray guns now permit economical spraying of metal alloys and ceramic materials. Available spray guns are compared; fusing and other properties of the alloys are discussed. Le

durcissement

supetficiel

par induction a 1’PchelIe

haute frt+quence, et son application

europeenne. Surface Hardening by High-frequency Induction and Application in European Industry. M. Labrousse. ;Ife’tallurgie et la Constvzrctimz ~Wffcff~ZiqUe, V. 88, IlO. 9, Sept. lgjb, 1,. 72j72h,

irg-73

I.

Tcchniqne; surface structure changes. llse on a production line basis. Comparison of contour hardening in the I..S.A. and France. Am&oration de la rhsistance Q I’oxydation et B I’usure au moyen d’un d&p&t non galvanique de nickel. Improving Oxidation and Wear Resistance Through Non-Electrolytic I leposition of Nickel. .\. I’ortalupi and E. &felgars. ~~~~~u~~~~g~~~ et la Constrr4rtion ,V&u_raiq?4e,v. 8X, no. gl Sept. 19.56, P. 747-749, 7.51, 753. Chemical Ni plating compared to the electrol>-tic process. Better protection trf edges by chemical coating. Some Properties of Oxide Layers Produced on Aluminium by Electrolytic Oxidation. CV. Ch. van Gee1 and B. J. J. Schelen. PhiZips iiesearch Reports, v. ~2, June 1957. p. 24oz48. Thickness, dielectric constant, and density

measurements. I.aycr of mainly amorphous .U,O,,madc up of 0 atoms arrange<1 in ;I closed-packed lattice, which is often, but Ned not tlecessariiy be, cubic. The Hard Surfacing of Wear-Resistant Metal Surfaces. (in r)utch) I’. G. %‘eeber, J. \V. Rley, and Th. Berkbout. Snzit h’cdedsdi~z~en, v. 1I, no. 3, July-Sept. ‘956, p. 69-77. Preferred typo of hard surfacing metal, method of application, and the measurement of wear resistance. Preparation of Protective Coatings by Electrophoretic Methods. .\lIen c. Werner, James J. Shyne, Harold S. lsarr, and Bernard Triffleman. Wright .d iu 11eoelopmrnl Cenlev, ilf&PdS I.abovutouv I R’:l DC T~~~h.t2i~d Re@pt ,jb-_jz 1, Ipr. igj7G qb I_‘. iTL.507 lin3.r8w Vis.) Studies on protection of Mo and graphite. 1lultilayer coatings of Ho”,, Ni-rot, Cr anti Ni-bonded c’r,C, provided good static airoxidation resistance. Inclusions of a SO’F(, dense Xi-Cr layer resulted in sat&Factor\ ballistic impact resistance. Erosion was fair. Cleaning Metals and Alloys. 1’. X3, F. Young. 3fetal Finishivg, v. .j.+, Oct. 1956, 13. .j7-60, h,j. Surface contaminants, polishing and buffing compounds: ultrasonic cleaning; removal of surface films. (To be continued.)

Practical Aspects and Methods of Carbon Control in Heat Treatment. ?Viison T. Groves. ImSustrial tlenting, v. 23, Oct. 1956, p. 2060 + IO pages. E)fFect of surface C concentration on wear and fatigue life ; control of concentration. Chromizing for Resistance to Corrosion and Wear. 1)aniel E. Lchane and Richard I,. WschteII. Pvodwt ??%tgineering, V. 27, NOV. rQg6, p. I&-183. How gaseous diffusion of Cr produces either ductile or hard surfaces on steel parts. Influencc of base metal on the characteristics of the case. Wear Protection of Mild Steel by Phosphating. J, 11:. Kdgley. Ivm a%d Steel Institute, ./OtWnai, v. 185, Feb. 1957, p. 215-2~4. .I microscopic study of the change in the nature of mild-steel surfaces phosphated in an accelerated E’e phosphate, or an accelerated I:+&Vn phosphate bath, and of the changes during subsequent wear tests.