a substance added to another substance or material to make it harder
hardening in American English
(ˈhɑrdənɪŋ)
noun
1.
a making or becoming hard
2.
a substance used to harden something
Examples of 'hardening' in a sentence
hardening
It has been suggested there is a link between the arrests and the hardening of attitudes in Australia to Chinese investment.
Times, Sunday Times (2016)
Young identifies two causes for this hardening of attitudes.
Times, Sunday Times (2011)
The hardening process in his character began early.
Times, Sunday Times (2015)
Once the two are mixed the chemical hardening process begins.
Chapman, C. & Horsley, M. & Small, E. Technology Basic Facts (1990)
The poll shows a general hardening of partisan attitudes as voters begin to think about the general election.
Times, Sunday Times (2009)
So far we have focused primarily on property " target hardening"; what about the environment?
Walklate, Sandra Victimology - the victim and the criminal justice process (1989)
All related terms of 'hardening'
harden
When something hardens or when you harden it, it becomes stiff or firm .
age hardening
the hardening of metals by spontaneous structural changes over a period of time
air hardening
a process of hardening high-alloy steels by heating and cooling in a current of air
oil hardening
a process of hardening high-carbon or alloy steels by heating and cooling in oil
flame hardening
the surface hardening of ferrous metals by heating the metal with an oxyacetylene flame followed by rapid cooling
self-hardening
designating or of any steel that will harden if air-cooled after being heated above red heat
strain hardening
a process in which a metal is permanently deformed in order to increase its resistance to further deformation
dispersion hardening
the strengthening of an alloy as a result of the presence of fine particles in the lattice
induction hardening
a process in which the outer surface of a metal component is rapidly heated by means of induced eddy currents. After rapid cooling the resulting phase transformations produce a hard wear-resistant skin
precipitation hardening
a process in which alloys are strengthened by the formation , in their lattice , of a fine dispersion of one component when the metal is quenched from a high temperature and aged at an intermediate temperature
harden off
to accustom (a cultivated plant) or (of such a plant) to become accustomed to outdoor conditions by repeated exposure
harden up
to tighten the sheets of a sailing vessel so as to prevent luffing
hardening of the arteries
a pathological condition of the circulatory system characterized by thickening and loss of elasticity of the arterial walls
case-harden
to form a hard surface layer of high carbon content on (a steel component) by heating in a carburizing environment with subsequent quenching or heat treatment
face-harden
to harden the surface of ( steel or iron ) by the addition of carbon at high temperature
work-harden
to increase the strength or hardness of (a metal) by a mechanical process, such as tension , compression , or torsion