Geoscience Reference
In-Depth Information
1/16
in. o.d. 316 STN_0.017
in. i.d.
capillary tubing
to Meise gauge
Silver solder
1/8
in. o.d. platinum
capillary tubing
0.017
in. i.d.
Platinum capillary tube
Meliarc welded to
platinum plunger
Steel plunger
Cap
Platinum plunger
0.060
in. PT.
Annealed platinum
seal disk easily
deformed by plunger
0.005
in.
Band heater
Platinum
+
10%
Rh liner lip
0.050
in. thick
Liner 1/32
in.
wall platinum
Strip heaters
STP steel
hot plates
Steel autoclave
Tinken 17
−
22
in. AS
Autoclave dimensions
o.d.
—
3.0
in. i.d.
—
2-7/8
in.
i.d.
—
1.0
in. o.d.
—
5-1/4
in.
Autoclave properties
hardness Rockwell C34
−
38
Figure 3.21 PVT apparatus
[56]
.
solid specimen from the solution under hydrothermal conditions in order to avoid
regrowth or further weight loss during quenching.
Figure 3.23
shows the sche-
matic diagram of the autoclave designed for solubility measurements by
Yanagisawa et al.
[59]
. The autoclave was fabricated using stainless steel with a
Teflon liner. The chamber was separated into two parts by platinum mesh. A solu-
tion was transferred to the bottom of the chamber, and crystals were placed on the
platinum mesh. The position of the platinum mesh and the volume of the solution
were selected so that the crystals did not have contact with the solution under
hydrothermal conditions for solubility measurements. The autoclave was con-
nected to a rotation shaft in a hot air oven with an electric fan to minimize the
temperature difference in the oven. The contents of the autoclave are agitated
slowly, and this helps in establishing equilibrium. About 3 min are needed to
