Document EdGbG8q0QbBOdjQ28461XwJdn

PLAINTIFF'S EXHIBIT /' JTZ 1959 Charles S. Pearce, Editor Mary J. Gihe. Associate Editor M. GzhaLdinh SMrrH, Assistant Editor Helely L. Jwcstus. Editorial Assistant Doris J. Facst. Editorial Assistant Committee on. Publications: W. Raymond Kerr. Chairman; J. 0. Everhart, . P. McNamara, and Z. F. Osborn Technical Adviser: Marces Z. Reseh i i Compiled by The American Ceramic Society, Inc. 4055 IHorth High Street Columbus 14, Ohio 95:'! I Chcrr.ir.try p.byxicx--A*;", Cc~.<! J a . !vt crrni::a: :iv-. <: ::>< number of .ihscrvasiuns and - ' n i.i he! ::i-r ru-:i:a;:i.,ii Is present <<r absent .'.'"n-. herrv In pn-eris ni working up the mnsurmerli. their lumber is *.nitconsidered insufficient and sometimes un- leetssa.-nv large Mi'sn w ; a ctmchi sion as 11 s the presence of men:a::i.):i is drawn without Ucneri: of tneury. and the observa- ices are term mated The sequential method would indicate the trecsse pruhabii::'-' relations with a reduction in the requisite suet- xr ci observations by a factor of J The construction o: strum- are diagrams is carried out rationally with equal interval regions, -jagur. te-rmg maximum precision in the construction (a fsavrai- iil network i. 6 figures, 6 tables. 13 references. D.T.W S re dies la lithium oride systems: III, Liquid iir.miscib'Jity In ha yrte~ LiiO-BeOr-SiOi. B S. R. Sastry aad F. A Hummel. 1. ,-iwi Ceram Soc.. 42 (2| S1-S3 (1959).--Glasses within the cm ary system LijO-B:G.-5iOe containing less than 25.6% Li:G -ir. be broadly classified into three groups according to their be- tsvicr dur.ng cooling or heating. One group, containing either core than 13% Li?0 or less than 20% SiOe. yields clear giasses lerlng slow or rapid cooling. The second group, containing ap- rrortmarely 5 to 15% LiiO and 2a to 90% SiO!p yields dense wmte gjal glass during slow or rapid cooling. The third group, located it the outer edge of the second group, cools to room temperature is clear glasses but develops opacity when reheated to tempera- ares between 550" and S30'C. It has been shown by electron aicroscopy that the opacity is due to liquid immiscibility. the SAtrix glass containing well-formed spheres of the dispersed ihase. Some cf the clear glasses of both groups consist of ln puaiscible phases. The size of the dispersed units in the spon- arecus opal glasses and in the reheat opal glasses can be controlled )y the variation of the reheat treatment. The phase separa- ica reported here is beyond the resolution of the petrographic aicroscope and can be detected only with the high resolution of he electron microscope. Accessory evidence is given to show hat the phases are noncrystalline. II figures. 7 references. 'or part II see iirid.. 41 (3| 33-92 (1953). Thermal decomposition of dolomite: V, Investigations on he adsorption of thermally decomposed dolomite crystals. A. A., w. Haul and F A Roal. Z. anor;. a. aff<em. C-iem.. 231 [3--I 99-21! ( !95Aj --The adsorption isotherms of argon on dolomite Tystals heated previously at 71X1" to I1(XJ"C. were studied. " rum mere m.ear-ei : s : r. c S3reir,c surfttre area unci .!:< tribuliofi and Site of ; ires were derived; they were ennqarei: with the v.iiers untamed from the 3aT, Anderson, and Huttig isotherms The results smiw that there is a fundamental change in the structure properties in tr.e temperature range SOJ` to C. The rr.agniitude of these changes depends on the rate of heat ing ar.d determines the proper:ties and the hydration of burned _ dolomite, a ngures. 29 references For part IV see Ceram A b:ir.. Lc;c. April, p iUl G3 J-ray : n v e stag a t: o n of maaerxJs of the isomorphous series fer- sterite-fayiiite. E. N*. Eliseev. Zapiei: Ytesoytt. .\{t r.erzi Gbs.-xkeii-.et, 34 ,6) 657-70 1957).--Olivine is one of the principal rock-forming mir.erais. The contents cf iron and magnesium vary, with accompanying changes in index of refraction and spe cific gravity. E. deals w ith changes in the distance between crys tal planes, as measured by X rav, due to the replacement of mag nesium by iron in olivine: by the new method of analysis tne composition of the mineral may be determined. 3 figures. 6 tables. 19 references. D T.'-V. Z-rxy intensity mesroremeats with counter tubes. \V Par rish. philips Teed. Err.. 17 ;7-5) 206-21 (1955-56). -- P. discuss es the peculiar problems of quantitative X-ray intensity measure ments with counter tubes, with special reference to the various procedures possible with the Norelco diffractometer. The in fluence of inadequate crystallite orientation in the specimen has been eliminated by spinning the specimen in its own plane. 22. figures. 2 tables. 16 references. J.J.D. ,/ Zeis potential* in relation to rheological properties of oxide slips. P. J. Anderson and ?. Murray. J. Am. Ceram. Soc.. 42 [2| 70-74 (1959).--The characteristic minimum that occurs in the apparent viscosity-pH curves lor oxide slips is explained in terms of the zeta potential of the dispersed oxide. The model adopted also explains other features of the rheological behavior of oxide slips, fi figures. 13 references. PATSNT Crystal growing system. Carl J Christensen (United States of America as represented by the Sccretarv of the N:iw). V. S. 2.363,740, Dec. 9. 1953. `[)J 3 So-- also Sect. XVI. 3ooks. XV--<3 eneral Sasic research ir. industry. H. '.-hr i-.rt. I -i T.-'a-i S'-:. a ptpettc. The uit rmqhaslzes the practical importanc* of 3iui.. 33 [1.' 1-3 (1959). preparing a piaster mold wn-.cn has both a high porusity and a Brick moicer's look it Russia. L. R Whitaker. Am. Ceram. low permeability. These properties are achieved by using a high 'ec. in.'.. 2-i "I! 25-26 ( 7359). i ph-ito. piaster.'water ratio, as lung a mixing time as possible, and a short Dust aieuurtntsa and dual standards. Rudolf Sommer.. aging time before pouring the plaster The diffusion ctiefficten: liiiiatteei , 9 9] 393--HX) (1953) --Apparatus for determining of a mold decreases slightly curing service due to the chemical he number of dust particles, measuring methods, international 9 attack of the piaster by the siip deflocculant. 1U figures. 7 ref landanas for tr.e permissible number of dust particles in 1 ec.. erences. 1 tabie. J A.5. id classification of dusts are discussed. 4 figures. 1 reference. Study of "freezing" of pyrociitric cones. Chen Hsen-ku. M.Ha. Acta Met. 5iaico. 2 (11 99-106 (1957) (in Chinese): abstracted in Rew knowledge in combating silicosis ia production opers- J. Iran Steei lit:. (London). 190 131 313(1958). -- Freezing tnot foax. Artur Brandt Sihiattecit.. 9 |9| 394--97 (1958).--The deforming at the softening temperature) is caused by the forma Attribution of silicosis cases in ail industries (East Germany i is tion of crystals from moiten phases in the enne when the furnace riven: 33 43'" occur in tne silicate industry. Data are also temperature is unsteady or remains for a long time below the riven for tne time between exposure and diagnosis. Protective " softening temperature. In Seger cones 7 tn 10 these are enstn- Erasures are discussed. csDeciaily for female and juvenile woric- baiite. and in cones II to 16 t.ney may also enntain muilite. Freez ii. Siiicntuoercuiosis was found in the porcelain industry at a ing can be avoided by reducing the proportion of Nat0 or K,0; Euc.n higher percentage than in all other industries. I figure. CaO or MgO cannot be substituted for the alkali oxides. M.Ha. -- V.R.E. Plaster molds and the influence of their properties on the forNation of a slip casting. L. Lehmann. Bcr. dent, keram. Get.. Q [9| 273-77 (1958).--The diffusion coefficient of water in a series 1 plaster of Pans mold materials was measured by observing the ate of upward movement of the saturation boundary in a colum*r test piece, the bottom of which was in contact with water. Measurements were made of the casting rates of a typical stnne- body in molds with different plaster/water ratios, mixing Successful smoke elimination. Harry Davis. Bru.Clayrrarker, 67 |799| 197-99 (1958).--D. discusses the emission of brown and 1 black smoke from coal- and gas-fired kilns. The elimination of smoke in two stoneware and porcelain kilns fixed with gas (Diesel) nil is described. A saving f 15% in fuel consumption was also obtained. 4 figures. C.M.C -- Technical dust control in the silicate industry. Rudolf Bom- ad aging times, etc. The casting rate increased as the diffusion mert. SiideatUch.. 9 (9[ 401-406 (1958).--3. gives a general dis ^efficient decreased. This unexpected and. at first sight, mum- cussion of the danger of dust, arrangement and types nf protec Jous result is due to the fact that the more absoroent mtiirl tive equipment, proper working clothes, and ventilation. 14 pneidy forms a laver of bodv consisting of the finest panicles. ' figures. 3 references. M.Ha. fills layer hus a low water diffusivity in<* decreases the effective Work and health protection in the plants of the silicate industry. -haorbing p*oer the mold. The prrsence of this skin "n Eduard Xersten. Siliiatteeh.. 9 [9| 388-93 (1958). -- Industrial --e cast can oe ot-moiistraieri by measuring the time required for hazards and measures and regulations fur their elimination in oeabsorption of a given amount of KMnO solution drawn from East Germany are described. 6 photos. M.Ha.