Temperature coefficient of the silica spring balance and estimation of errors in gravimetric adsorption measurements

1981 ◽  
Vol 52 (1) ◽  
pp. 101-104 ◽  
Author(s):  
V. E. Berkheiser ◽  
P. V. Rao ◽  
W. G. Pothier
Keyword(s):  
Temperature Coefficient ◽  
Spring Balance ◽  
Gravimetric Adsorption

A RECORDING VACUUM THERMOBALANCE

1957 ◽  
Vol 35 (4) ◽  
pp. 374-380 ◽  
Author(s):  
J. G. Hooley
Keyword(s):  
Temperature Coefficient ◽  
Maximum Sensitivity ◽  
Weight Changes ◽  
Dimensional Changes ◽  
Spring Balance ◽  
Fused Quartz

A recording quartz spring balance is described, with which weight changes up to 1000 mg. can be followed linearly on a millivolt recorder for samples weighing up to 10 g. During the recording operation the sample may be under vacuum or pressure and may be heated or cooled. The maximum practical sensitivity is about 20 millivolts per milligram and the over-all error in reading the record is about 1 millivolt. The temperature coefficient of fused quartz springs is reported to be − (1.25 ± 0.02) × 10−4 per degree centigrade in the range 20° to 35 °C.The device could be readily adapted for heavier loads and greater weight changes by using less sensitive springs and could be used for measuring dimensional changes of solids with a maximum sensitivity of at least 2000 mv. per millimeter.

EVANOHM

Alloy Digest ◽  
1960 ◽  
Vol 9 (4) ◽  
Keyword(s):  
Electrical Resistivity ◽  
Low Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Temperature Coefficient ◽  
Base Alloy ◽  
Nickel Base Alloy ◽  
Temperature Coefficient Of Resistance ◽  
High Electrical Resistivity ◽  
Nickel Base

Abstract EVANOHM is a nickel-base alloy having low temperature coefficient of resistance and high electrical resistivity. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on joining. Filing Code: Ni-57. Producer or source: Wilbur B. Driver Company.

EVANOHM ALLOY S

Alloy Digest ◽  
1989 ◽  
Vol 38 (7) ◽  
Keyword(s):  
Electrical Resistivity ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Temperature Coefficient ◽  
Electromotive Force ◽  
Temperature Coefficient Of Resistance ◽  
Resistance Wire ◽  
High Electrical Resistivity ◽  
Optimum Stability

Abstract EVANOHM alloy S offers optimum stability and flexibility with regard to both size and required temperature coefficient of resistance. Its extremely low electromotive force vs copper together with its high electrical resistivity are highly desirable properties in a precision resistance wire. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on corrosion resistance as well as joining. Filing Code: Ni-373. Producer or source: Wilbur B. Driver Company.

ISO-ELASTIC

Alloy Digest ◽  
1957 ◽  
Vol 6 (8) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Low Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Temperature Coefficient ◽  
Nickel Alloy ◽  
Modulus Of Elasticity ◽  
Heat Treating ◽  
Precision Instrument ◽  
Iron Nickel

Abstract ISO-ELASTIC is an iron-nickel alloy having low temperature coefficient of the modulus of elasticity. It is suitable for precision instrument springs. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and machining. Filing Code: Fe-14. Producer or source: John Chatillon & Sons.

MONEL ALLOY 401

Alloy Digest ◽  
1970 ◽  
Vol 19 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Temperature Coefficient ◽  
Nickel Alloy ◽  
Electrical Resistance ◽  
Heat Treating ◽  
High Electrical Resistance ◽  
Good Corrosion Resistance ◽  
Copper Nickel Alloy

Abstract MONEL alloy 401 is a copper-nickel alloy with high electrical resistance and is used primarily in specialized electrical and electronic applications. It has a negligible temperature coefficient of electrical resistance and good corrosion resistance. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming, heat treating, and machining. Filing Code: Cu-216. Producer or source: Huntington Alloy Products Division.

Silicon Fringe Sample Metrology—A Thickness Measurement Technique

2013 ◽  
Author(s):  
Mark Kimball
Keyword(s):  
Temperature Dependence ◽  
Temperature Coefficient ◽  
Measurement Technique ◽  
Thickness Measurement ◽  
Sample Thickness ◽  
Index Of Refraction ◽  
Interference Fringes ◽  
Noncontact Method ◽  
Thickness Variations

Abstract Silicon’s index of refraction has a strong temperature coefficient. This temperature dependence can be used to aid sample thinning procedures used for backside analysis, by providing a noncontact method of measuring absolute sample thickness. It also can remove slope ambiguity while counting interference fringes (used to determine the direction and magnitude of thickness variations across a sample).

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