recrystallizationn.
/ˌriːˌkrɪstl̩ʌɪˈzeɪʃn/, /ˌriːˌkrɪstəlʌɪˈzeɪʃn/, U.S. /ˈˌriˌkrɪstələˈzeɪʃ(ə)n/, /ˈˌriˌkrɪstəˌlaɪˈzeɪʃ(ə)n/ 1. Chemistry. The action or process of crystallizing again; esp. a process for purifying a substance in which crystals are dissolved in a solvent and the resulting solution concentrated, causing crystals to reappear; an instance of this.In quot. 1881 figurative.
ΘΚΠ
the world > matter > chemistry > crystallography (general) > crystallization > [noun] > recrystallization
recrystallization1836–41
the world > space > shape > [noun] > shaping > giving or assuming definite form > again
recrystallization1881
1757 tr. J. F. Henckel Pyritologia 278 The sulphur yellow is..also what precipitates from the recrystallisation of a vitriol [Ger. so sich..bey..dererselben abermahligen Crystallisirungen niederschlägt].
1782 Quincy's Pharmacopœia Officinalis (ed. 15) 313/1 The place of salt of steel prepared as above, is in general supplied by common English copperas. or green vitriol purified by filtering, and a careful recrystallization.
1836–41 W. T. Brande Man. Chem. (ed. 5) 911 The crystals of chromate are..purified by recrystallization.
1881 Daily News 7 Dec. 5/1 A breaking up and recrystallisation of..parties.
1937 Discovery Feb. 35/2 The firn consists of granular particles of ice..formed by recrystallisation of the snow.
1973 B. J. Hazzard tr. Organicum ii. 38 The most important method for purifying solids is recrystallization.
1993 Dyes & Pigments 21 25 The aromatic amines used for the azo couplings were purified by recrystallization from petroleum-ether.
2. Geology. A process in which the atoms, molecules, or grains of a rock or mineral rearrange into a new crystalline structure, esp. under the influence of metamorphic forces operating at depth, such as extreme heat and pressure.
ΚΠ
1868 Jrnl. Chem. Soc. 21 238 A block of compact soapstone..has been greatly changed in appearance, now possessing a finely developed foliated structure, with large crystalline plates... It is probable that the effects are entirely due to recrystallisation.
1900 Philos. Trans. (Royal Soc.) A. 193 399 A fine-grained aggregate which represents a remnant of the original fine-grained limestone, from the recrystallization of which the marble was derived.
1940 F. F. Grout Kemp's Handbk. Rocks (ed. 6) ix. 216 The recrystallization that occurs at a late stage of magmatic action is called deuteric, and the recrystallization of a freshly deposited sediment is called diagenetic, rather than metamorphic.
1976 S. Judson et al. Physical Geol. v. 103/2 Adjacent to an igneous rock, the metamorphic reactions and recrystallization take place in response to heating alone without much associated stress.
2000 Proc. Amer. Philos. Soc. 144 3 Several Eurasian, Alpine-type mountain belts exhibit rare, scattered effects of recrystallization at profound depths.
3. Metallurgy. The rearrangement of the crystalline structure of a cold-worked metal when heated above a certain temperature, which has the effect of reducing distortion of the lattice.
ΚΠ
1900 Proc. Royal Soc. 1899 65 85 In iron this recrystallisation occurs at a red heat.
1925 Jrnl. Iron & Steel Inst. 112 474 A formula is derived for establishing the relation between the progress of recrystallisation and the degree of deformation in the hot state.
1976 M. C. Nutt Metall. & Plastics for Engineers v. 78 Recrystallization occurring at elevated temperatures is a process of the formation and growth of unrestrained grains, supplanting entirely the cold-worked structure.
Compounds
recrystallization temperature n. chiefly Metallurgy the temperature at which recrystallization occurs; cf. sense 3.
ΘΚΠ
society > occupation and work > industry > working with specific materials > working with metal > [noun] > specific temperatures in metalworking
blue heat1793
cherry-red1802
recrystallization temperature1907
1907 Proc. Royal Soc. A. 79 478 In annealing by heat, no important softening of the metal or reduction of mechanical stability occurs till the recrystallisation temperature is reached.
1961 G. E. Dieter Mech. Metall. v. 155 For practical considerations a recrystallization temperature can be defined as the temperature at which a given alloy in a highly cold-worked state completely recrystallizes in 1 hr.
1989 A. C. Davies Sci. & Pract. Welding (ed. 9) I. ii. 116 At the recrystallization temperature, the distorted metal structure is able to re-arrange itself into the normal unstrained arrangement by recrystallizing.
This entry has been updated (OED Third Edition, June 2009; most recently modified version published online March 2022).
<
n.1757